In this module, we discussed the TTA. We identified the common causes of altered mental status in combat or noncombat environments, the importance of disarming and securing the communications equipment of a casualty with altered mental status, and techniques for communicating with a casualty in TFC. We also demonstrated techniques for assessing a casualty for responsiveness, applying body substance isolation, conducting a TTA in the proper order using the MARCH PAWS sequence, and using appropriate actions and interventions in a casualty assessment to render aid in accordance with CoTCCC Guidelines.