Make sure all required and applicable equipment is in your Service-specific JFAKs, CLS Bags, and CMC Bag.
Items with broken or unsealed wrappers should be replaced. If an item was vacuum sealed tightly when issued and is no longer sealed upon inspection, it should be replaced.
Medications and many medical-grade materials such as hemostatic dressings have an expiration date and lot number. Check all medications and medical-grade items for expiration date and replace if expired or the expiration date does not exceed your expected deployment timeframe. Generally, items such as tourniquets do not have an expiration date, but check to ensure the devices are approved by the DoD Committee on Tactical Combat Casualty Care, are serviceable, and reflect the current generation (have not been replaced with a newer model, etc.).
Sometimes, you may overtrain with equipment, and that can affect its function (like a windlass rod of a tourniquet that can crack and break with repeated use), so train on your equipment but obtain new supplies before deploying that are the same makes and models that you trained with.