INTRODUCTION
Reducing the time to required medical or surgical intervention prevents death in potentially survivable illnesses, injuries, and wounds. When evacuation times are extended, en route care (ERC) medical care capability must be adequately expanded to mitigate the delay. In January 2010, the Joint Force Health Protection Joint Patient Movement Report stated, “the current success of the medical community is colored by the valiant ability to overcome deficiencies through 'just-in-time workarounds.’ Many systemic shortfalls are resolved and become transparent to patient outcomes. However, future operations with peer or near-peer adversaries may not tolerate current deficiencies.” 1,2
This JTS Operational Guideline recommends the minimum requirements and capabilities for the movement of critical care patients between military medical treatment facilities (MTFs). ERC and patient movement play a critical role in the combat casualty care continuum. Short times to a ‘capability’ allow for life-saving intervention to be delivered shortly after illness or injury; this was the trauma system during previous U.S. Central Command (USCENTCOM) operations. Rapid transport through the care continuum was exploited during USCENTCOM operations to support the small medical footprint, forward surgical care, and rapid transport to a higher echelon of clinical care. This was made possible secondary to air superiority and numerous deployed Medical Evacuation (MEDEVAC) teams. In the future operating environment, ERC personnel may find themselves providing primary and emergent care with little possibility of timely patient movement. All providers should have familiarity with the risks, benefits, and alternatives to rapid movement of casualties and have a clear understanding and familiarity with all possible platforms in which they could be called upon to move patients in theater to the next role of care.
This guideline is specifically concerned with the administrative aspects of inter-facility transport of patients between the intra-theater roles of care. Please refer to the En Route Care guidelines (located on JTS website & Deployed Medicine) and to Aeromedical Evacuation (AE) guidelines for inter-theater transport. It is important to note that, in an immature theater of operations or in a larger-scale conflict, casualty numbers may exceed available resources. When this occurs, compliance with this guideline may be compromised.
Combatant Commanders need to ensure appropriate patient movement resources are a priority, especially for critical care transports between treatment facilities.
BACKGROUND
In recent conflicts, most combat deaths occurred before arrival at Role 3 facilities, underscoring the need for improved care.3 ERC is critical across the continuum, especially in Large Scale Combat Operations (LSCO), where higher casualty rates and evacuation constraints are expected.
Interfacility transport adds risk - movement often occurs in combat platforms with limited space, few providers, and challenging conditions—noise, vibration, cramped quarters, and weather—that compromise monitoring, dislodge equipment, and worsen injuries.4,5 Air transport adds further hazards, including reduced oxygen pressure and increased tissue swelling.6 Enemy activity and diplomatic restrictions can also impact routes, timing, and safety. Effective ERC teams anticipate these threats and develop strategies to mitigate them to the best of their abilities.
Patient transport itself is a medical intervention with inherent risks and benefits. In combat, evacuation is essential to deliver definitive treatment and clear the battlefield. Medical resource centralization reduces relocation needs, preserves capability, and lowers logistical burden. Still, each movement carries both direct risk to patients and the possibility of losing transport assets and crews to accidents or enemy action.
To minimize transport contribution to morbidity and mortality, optimal but not necessarily definitive patient stabilization before transport is critical and encompasses four connected elements:
Resuscitation Goals
1. Heart Rate 50-120 /min
2. SBP >90 mm Hg, MAP >60 mm Hg - in the absence of traumatic brain injury
If elevated ICP or CPP, maintain target MAP between 80-110 mmHg
3. SpO2 >94%
4. Temp > 95ºF/35ºC
5. Urine Output > 50 mL/h
6. Hemoglobin > 7.0 g/dL
7. Platelets > 50k/mm³
8. INR < 2.0
9. Base Deficit < 6
10. Lactate < 2.5 mmol/L
11. EtCO2 35-45 mmHG
Medical capability is the quality or state of being able to provide the expected and required medical services and support to the patient. Within the system of ERC, and when capability is discussed in this document, it is the ready and available potential to provide the required critical care in a proficient and timely manner. It includes the physical and mental talent of the team, as well as the physical presence of all medical materials and equipment in the platform that are expected by theater policy. A capability does not exist if the personnel are not proficient or if they are missing medical supplies and equipment. The ERC team must be integrated effectively with the transport platform team. The ERC team should be integrated effectively with the transport platform team. Therefore, units must be conversant and compliant with the published theater standards, along with being physically and materially ready to execute the assigned mission. Within the operational theater, it is critical to ensure actual capability is effectively communicated between medical control, the transferring facility, the ERC team, and the receiving facility. The ERC organization has a moral, ethical, and legal obligation to ensure they can carry out their mission essential task list and mission essential care capability for the patient. If not, they must notify their commander, the medical director, and the medical dispatch center that they are unable to provide the expected and required care to our critically ill, injured, or wounded patients. Since MEDEVAC is a theater asset, the local unit commander cannot legitimately accept risk for the theater commander. Locally accepting risk of a reduced capability compromises care, contributes to excess morbidity and mortality, and is inconsistent with the effective and efficient use of medical dispatch centers. It is the center’s mission to select and assign the appropriate evacuation asset to the right mission.
Three levels of capability are recognized in this guideline: Basic, Advanced, and Critical Care. The ideal military ERC system will be a scalable and modular asset with appropriate resource allocation to provide a full range of patient care services, including advanced clinical capabilities.
Basic ERC should be initiated for a patient capable of being transported by ground ambulance that does not require critical care but needs a dedicated medical attendant with at least the knowledge and skills equivalent to an Emergency Medical Technician (EMT) as defined by the National EMS Scope of Practice Model. Adequate medical supplies to perform basic lifesaving interventions are necessary. Patients in this category have a low complexity of care requirement, which must be attended by a medically skilled provider, but are not expected to deteriorate during the period of the patient movement.
Advanced ERC should be initiated for a patient who does not require critical care but needs a dedicated medical attendant with at least the knowledge and skills equivalent to a paramedic as defined by the National Emergency Medical Services (EMS) Scope of Practice Model.14 Adequate medical supplies to perform lifesaving interventions, as well as ongoing resuscitation, are also necessary. Patients in this category have some complexity of care delivery that must be maintained by a medically skilled provider but are not expected to deteriorate during the period of the patient movement.
Critical Care Transport is required when “the patient has a critical illness or injury which acutely impairs one or more vital organ systems such that there is a high probability of imminent or life-threatening deterioration in the patient's condition during transport.” For success, en route critical care must be provided by a team of providers “with the requisite decision making skills of high complexity to assess, manipulate, and support vital organ system failure and/or to prevent further life threatening deterioration of the patient's condition during transport.”13 Ideally, this multidisciplinary team will be comprised of a physician or other independent practitioner with extensive critical care experience, an ERC-trained Critical Care or Emergency Nurse, and a Flight Paramedic. This team will have the requisite equipment to perform lifesaving interventions as required by the clinical scenario.
Sometimes, a completely packaged and fully stabilized patient is operationally unrealistic. Some injuries or illnesses cannot be stabilized due to capability limitations. Limited capability may be the driving indication for transport. These transfers are fraught with the risks of undesired outcomes during transport. Subsequently, the transferring provider should document the indications for transport before patient movement, continue the resuscitation, and ensure adequate (even higher) capability of the ERC. The gold standard for unstable patient transport is movement with critical care capability led by a physician who is qualified, experienced, and proficient at critical care transport.
Required ERC capability should be based on the current condition of the patient being transferred and their expected course during transport. This is determined by the transferring provider. If the requested level of ERC is not available, then a higher level of care should be provided. If this is not an option, then the transferring provider and the operational commander must carefully weigh the risks of patient transfer using a lower capability versus the risks of transport delay.
Commanders
Joint Publication 1 Joint Publication Vol 1, Joint Warfighting, 27 Aug 2023 states that, “…doctrine will be followed except when, in the judgment of the commander, exceptional circumstances dictate otherwise.” The Commanders have specific responsibilities under Title 10, United States Code, to organize, train, equip, prepare, and maintain their forces. For the purposes of this document, that responsibility is the ERC capability. Commanders are delegated authority to accomplish their assigned missions but cannot absolve themselves of responsibility for the attainment of these missions.
Commanders of dedicated MEDEVAC organizations shall not individually assume risk when they are not capable of providing the required intratheater ERC capability. Any risk assumption of reduced capability should be assumed by the theater commander, as MEDEVAC is a theater-level responsibility. It is the commander’s duty to notify higher command if they cannot execute their mission essential task list. Inherent to ERC within the mission essential task list is the capability to care for the patient with the level of care that is expected and required by the mission and the condition of the patient. Except as noted in Joint Publication 1 regarding exceptional circumstances, the advertised capability must be present during transport, or increased morbidity and mortality rates will result. This has been demonstrated across evidence-based medical reviews and studies.1 Many commanders of ERC programs are non-medically trained professionals (pilots, combat arms, etc.). Commanders should work in conjunction with assigned medical directors at the local, field, and theater level to ensure end unit continuity.
Health care teams are composed of a variety of different provider types, and the ERC mission is no exception. ERC providers must receive formal education and training to ensure platform familiarization and platform crew resource management. Updating military ERC systems based on cautious application of civilian best practices should be tempered by a realistic understanding of operational considerations. Over 67% of civilian Helicopter Emergency Medical Services (HEMS) agencies in the United States staff their helicopters with a Critical Care or Emergency Trauma Flight Nurse and Critical Care Flight Paramedic team.15 Most ground EMS agencies use some variation of an EMT, Paramedic, and Critical Care Nurse team. International HEMS agencies frequently use physician-led critical care transport teams.
The National EMS Scope of Practice Model is the core document that describes the scope of practice for civilian EMS providers in the United States.14 These civilian levels of EMS providers, typically applied to enlisted medical providers, are Emergency Medical Responder, EMT, Advanced EMT, or Paramedic. Registered Nurses (RN) with education and training applicable to prehospital care have several advanced certifications available to validate their skill and knowledge proficiency, including Certified Flight RN, Certified Transport RN, and others. Several international EMS systems educate, train, and certify physicians as prehospital providers. Some Emergency Medical Services Fellowship programs for physicians in the U.S. train physicians to provide care in the field, and others are more administrative functions of EMS Medical Direction.
The United Kingdom (UK) Medical Emergency Response Team platform is the most well-known for use in the Regional Command South of Afghanistan (c 2005-2020).
Higher competency and capability improve case fatality rates when patients are transported. During Operation Enduring Freedom, care provided by critical care flight paramedics showed a 66% lower risk of 48-hour mortality compared with that of basic level EMTs.16, 36 In the UK, prehospital critical care is provided by physician-staffed HEMS. These teams have demonstrated survival in cases previously thought to be non-survivable (e.g., traumatic cardiac arrest).17 British military platforms with on-board intensivists have likewise demonstrated improved survival in more severely injured patients. 18
It is imperative to understand the attributes of the different provider types based on their qualifications and certifications. Instrumental to ensuring capability is the verification of the currency of their practice experience and their skill proficiency. Additionally, well-trained teams improve outcomes, so ERC teams that train together prior to operational assignment may optimize patient outcomes.
Patient transport is conducted as a planned component of a given mission aboard dedicated platforms or transport of opportunity. Understanding the capabilities and limitations of the transport platform will help ERC providers, mission planners, and medical control optimize the care they deliver. This requires the appropriate selection capability to conduct the mission based on the provider team, resuscitative equipment, treatment protocols, and vehicular capabilities to move through the environment. For some ERC missions, the transport may require serial transfers between different platforms and modes of transport. All phases of transport must be considered by the ERC team to ensure they have the proper amount of consumables for the entire transport, such as oxygen. Familiarization with the different platforms available in a theater of operation is imperative.
When planning for LSCO, the frequency of multiple platforms and transfer legs between roles of care increases in relation to the combat environment. A single helicopter ride from Role 1 to Role 3 is likely not an option during this type of event. Multiple ground transport moves may be required prior to the utilization of an air asset.
Weight and space restrictions, as well as the challenges of patient transport in an operational setting, necessitate the deliberate and careful selection of medical materials for a given mission. The provider’s competency and the medical material actually present in the platform determine ERC capability. Platform selection will directly impact personnel and equipment availability and determine the highest level of care. Platforms should be chosen with an understanding of the patient's condition and must be appropriate for the type of ERC provider. Specific medical materials designated as patient movement items (PMI) must be available to support the patient during every phase of transport. Examples of PMI include ventilators, patient monitors, pulse oximeters, suction machines, IV pumps, oversized litters, negative pressure wound vacuums, pneumatic compression stockings/devices, etc.19 It is important that the transferring facility requests these items so that they can be loaded and transported with the ERC team. Whenever possible, the expendable medical supplies like oxygen from the transferring facility should be used until the last safe moment before departure. This action conserves the onboard medical supplies, which cannot be replenished without stopping and delaying the transport. Additional information on PMI is found in the AE Equipment Standards (AFI 10-2909), JP 4-02, and FM 4-02.1.20,21
Patient Movement/Evacuation Coordination Elements
Effective MEDEVAC and ERC rely on a dedicated coordination element possessing a comprehensive understanding of the operational environment, transportation networks, and asset capabilities. This element must integrate operational, clinical, and medical regulating functions across all military levels, ensuring casualties are moved at the right time, with the right care, to the right location.22 During Operation Freedom’s Sentinel, the Patient Evacuation Coordination Cell (PECC) successfully synchronized tactical medical evacuation efforts throughout Afghanistan. As the nerve center for MEDEVAC, the PECC validated requests, forecasted patient flow, and allocated ERC resources, ensuring patients received the right care, at the right time, and in the right place. For future success, a coordination center/cell requires clearly defined authorities, a joint structure, governing directives, and formal tasking relationships to manage intratheater patient evacuation. Empowered by the Combatant Commander, it must issue taskings, prioritize missions, and clinically manage ERC. Integration with command-and-control systems, logistics, and medical regulating structures, along with real-time situational awareness tools, is crucial for effective tasking and decision support. Without these authorities and mechanisms, synchronization across joint, interagency, and coalition environments are compromised.
Evacuation Requests: Point of Wounding, Illness, Injury
Two types of requests may occur in a theater of operation: the first is initiated when a 9-Line MEDEVAC Request is received from personnel at the point of wounding, illness, or injury. This is a standardized form used to communicate essential operational information to the coordination center/cell. While it contains Patient Precedence (Urgent, Urgent Surgical, Priority, Routine, Convenience), it lacks robust clinical information captured through a patient assessment and documented electronically (i.e., Battlefield Assisted Trauma Distributed Observation Kit [BATDOK] or on DoD Form 1380, Tactical Combat Casualty Card detailing a M.I.S.T. [Mechanism of Injury, Injuries, Signs & Symptoms and Treatments]). Report that supports clinical decision-making and intelligent tasking executed by the coordination center/cell to ensure casualties are operationally moved with the right ERC, at the right time, to the right location for the right care.
Movement Requests: Interfacility Transfers
9-Line MEDEVAC Requests can be used to request transfers between the Roles of Care but will require more clinical information to support the planning and coordination required to meet the needs of the patient and validate the level of ERC required to safely move high acuity patients, maintain clinical stability, and manage ongoing complex physiological needs in a dynamic transport environment. See Appendix A for the NATO 9-line MEDEVAC Request.
In addition to the 9-Line, patient movement requests can be submitted through the DoD information system called USTRANSCOM Regulating and Command & Control Evacuation System (TRAC2ES), (https://trac2es.transport.mil/) starting from Role 2, both surgical and non-surgical. Coordination centers/cells receive 9-Lines through the normal channels and use TRAC2ES as the system of record to plan, coordinate, and synchronize movement between roles of medical care, assign the right ERC team to execute, and conduct post-mission reviews for performance improvement and patient safety events.
No matter which system is used to coordinate movement, the senior medical person caring for the patient(s) determines movement precedence, timeline of when it will be safe to move, and is responsible for ensuring the patient(s) meet the clinical guidelines for ERC. The coordination center/cell is responsible for ensuring the right ERC team and platforms support the patient movement mission.
CAUTION: Terminology used to communicate precedence is not consistent across services. Terminology for air (rotary wing) and ground ambulances shall be used for inter-facility transport and is provided in Table 2.
Medical direction is a critically important aspect of ensuring the delivery of an expected capability of care in the out-of-hospital environment.25-27 While medical direction may be delegated to any physician regardless of specialty, it does require unique knowledge and skills. Medical direction has traditionally been the responsibility of the unit physician (flight surgeon for example), although most of these providers do not receive additional formalized or structured education or training for this duty. Most flight surgeon training programs focus on pilot medical readiness and not critical care transport of sick and injured patients.
Medical direction encompasses both online and offline clinical guidance.25 This OPG defines medical direction as the direct technical authority to determine capability, promulgate medical policy, and most importantly, the authority to enforce the standard of care through quality assurance with local privileging (official designation of ability to perform medical mission, not necessarily the hospital version of “credentialing”) actions of individual ERC providers. Online medical direction includes both the on-scene medical supervision of providers actively engaged in patient care, as well as real-time clinical guidance of providers via telecommunication.28 Offline medical direction includes protocol development and review, continuing education of prehospital providers, quality improvement activities, and other duties designed to increase the quality of the system, but are not related to immediate and direct patient care.25 Medical direction can occur at many levels. This OPG will focus on the requirements and responsibilities for unit-level medical direction and regional medical direction. The primary mission of the medical director is to ensure that the commander is effectively advised on the technical requirements of MEDEVAC, and the transport unit is providing the expected patient care capability and quality.
The commander of the unit assigned to perform MEDEVAC should appoint the unit’s physician as the medical director. The medical director is responsible for the technical control and supervision of all en route medical activities of the command and the commander delegates that authority in writing. This additional duty order should also include the authority to privilege ERC providers within that organization. It should also include delegation of the authority and prerogative to hold in abeyance, to deny, or to immediately but temporarily suspend clinical privileges/practice when there is reasonable cause to doubt the individual’s competence to practice or for any other cause affecting the safety of patients or others. The specific intent of the medical director’s decision to implement temporary adverse privileging actions should be the safety and well-being of all patients and safeguarding the quality and efficiency of care delivered by the ERC organization. If a unit physician is not available to provide medical direction, the unit conducting MEDEVAC should coordinate with the supporting MTF for a shared medical director.
Minimum Qualifications for Unit Medical Director
Desirable Qualifications for Unit Medical Director
Unit Medical Director Responsibilities
Offline medical direction:
Online medical direction:
Due to communication and patient care challenges unique to the deployed environment, online medical direction may be most effectively done by physicians other than the transporting unit medical director.29
Priority of online medical direction is:
The transporting unit medical director is responsible for ensuring providers know who and under what circumstances to call for online medical direction. It is important to plan/discuss whenever possible any anticipated scenarios requiring deviation from established ERC provider protocols with the transferring physician to ensure required medical supplies are available during transport.
Medical direction is required at the unit level and at the regional level (PECC). Medical direction at the regional level is centered on offline medical direction activities. Regional medical director works continuously to increase the quality of care delivered during intra-theater transport. Regional medical direction may occur at different levels based on the operating environment but will typically be at the level of the joint operations area and lower. The Joint Force Surgeon’s office is the doctrinal proponent for intra-theater patient transport and should assign regional medical directors. A best practice is to appoint a consultant at the Combined Joint Task Force level for EMS and ERC. The Joint Force Surgeon’s office shall provide regional medical direction unless they delegate this authority to subordinate regional medical directors.
Minimum Qualifications for Regional Medical Director
Regional Medical Director Responsibilities
The JTS CoERCCC recommends the development of service-agnostic courses for Medical Corps officers to serve as entry-level training for medical directors covering the fundamentals for physician leadership in EMS and ERC oversight and direction. ERC experienced Nurse Practitioners or Physician Assistants may serve as local medical directors under a Regional Medical Director who is a licensed and board-certified physician.
Recognition of the value of hospital-based CPGs led the Institute of Medicine in 2006 to recommend an evidence-based model for prehospital care protocols addressing treatment, triage, and transport.29 These protocols standardize care, reduce errors, and ensure appropriate treatment, particularly for non-physician providers who must often make decisions without direct physician input. Widely used in civilian EMS and in the U.S. Army’s Critical Care Flight Paramedic program, protocols guide practice within providers’ limited scope.
Evidence supports their effectiveness: a systematic review in the Netherlands showed significant improvements in care processes and modest outcome gains, an Intensive Care Unit (ICU) study reported reduced mortality after protocol adoption, and a prehospital study found protocol-based guidance slightly improved decision-making and decreased scene times compared with online medical direction.30-32 While system-level research remains limited, numerous individual protocol studies show improved outcomes.33,34
Beyond guiding care, protocols enable quality assurance and research by standardizing practice, identifying deviations, and addressing gaps.35 They require regular review, at least annually, and should be developed regionally by medical directors and adapted locally with regional approval.35,36
Inter-facility patient transport must be documented on an approved patient care record (PCR). JTS-approved PCRs include:
The DA Form 4700 is primarily used for rotary wing transport from POI or inter-facility transfer. The AF IMT 3899 is primarily used for AE, with supplements A through K as indicated for Critical Care Air Transport Team movements. The Rescue Report SAR Form 3-50.1/1 contained within NTTP 3-50.1, Navy Search and Rescue Manual, is required whenever a search or rescue is attempted or accomplished that involves Navy personnel or assets. Completed Rescue Reports must be submitted to the Navy Chief of Naval Operations Search and Rescue Model Manager’s office.
When completing the PCR, ensure the patient’s name on the PCR matches the name entered on arrival to the MTF. In cases where a casualty’s name is unknown, the MTF will utilize theater-predetermined trauma identities. Transport teams must obtain an ID sticker at the time of handover to the MTF to ensure the correct identity is recorded on the PCR.
The PCR should be completed and delivered to the receiving MTF along with the patient. Completed PCRs and After Action Reviews should be encrypted and submitted to JTS Patient Evacuation at the following email address: dha.jbsa.healthcare-ops.list.jts-patient-evacuationl@health.mil. If unable to encrypt, documentation may be sent encrypted utilizing DoD Secure Access File Exchange. A follow-up email with the “Passphrase” for encryption will have to be sent separately to the JTS Patient Evacuation email to allow for download of the file(s).