The aircraft is twenty minutes out. The casualty is not ready.
A line is running, but it is unsecured. The receiving team knows the injury, but not the last blood-pressure trend. The patient is warm at the casualty collection point, yet no one has planned how to keep that warmth during loading and flight. These are not clerical gaps. They are clinical problems that become harder to fix once the patient is on the aircraft.
En route care begins before the transport team arrives. A reliable handoff, secure packaging, and a longer-trip plan give the next team a safer start.
The Joint Trauma System's current En Route Care Patient Packaging Clinical Practice Guideline, 21 August 2024 defines en route care as the continuation of care during movement between roles of care without clinically compromising the casualty. The litter is the first platform for the next phase of treatment.
Start with the patient, not the platform. Recheck the airway, breathing, circulation, mental status, and the interventions already performed. Look at every tube, line, dressing, tourniquet, and monitor lead as something that must survive a move, a lift, vibration, darkness, noise, and a different team taking responsibility. The 2024 JTS guideline calls for completing time- or resource-intensive interventions before the en route care team arrives when possible. That reduces delays and keeps the handoff focused on the patient rather than unfinished preparation.
The packaging plan must match the injury. A casualty with a pelvic binder, chest intervention, blood product, or airway device needs a plan for access and reassessment. State what must remain visible, who will watch it, and what will trigger an intervention.
The sending team should prepare the 9-Line casualty request and a MIST report: mechanism of injury, injuries found, signs and symptoms, and treatment given, according to the 2024 JTS packaging guideline. MIST is a starting structure, not a substitute for judgment. Add the times that change decisions: when the injury occurred, when a tourniquet was applied, when blood or medication started, when the patient last had a normal mental status, and when the last set of vital signs was taken.
A useful handoff answers five questions: what happened, what can kill the casualty next, what has been done and when, what is changing, and what the next team needs ready. The JTS guideline includes medications, personal effects, identification, travel orders, and documentation in ground preparation for transport.
This structure also addresses a known weakness in trauma care. A peer-reviewed study of military and civilian trauma handoffs found that field communication is exposed to time pressure, limited visibility, noise, constrained workspaces, multiple handoffs, and changing clinical status. The study also identified the need for accurate temporal records during transport. In plain language: “what happened” is not enough. The next team needs “what happened when.”
Use read-back when the environment permits it. The receiving medic repeats airway status, hemorrhage control, blood products and medications, last vital signs, and the immediate concern. This catches a missed time or mistaken dose before the aircraft door closes.
The JTS guideline advises transport teams to prepare for two to three times the initially projected transport time. A two-hour movement may require planning for four to six hours. That is not pessimism. It is a supply and monitoring decision. Recalculate oxygen, battery, medication, blood-product, warming, and waste needs against the longer window, then state what will happen if the trip extends again.
Thermal control deserves its own check. The JTS Hypothermia Prevention and Treatment guideline recommends early, aggressive steps to prevent further heat loss for trauma casualties. It calls for insulation from cold surfaces, replacing wet clothing when possible, adding a vapor barrier when wet clothing cannot be removed, and monitoring temperature during rewarming. The same guideline gives a target of 38–42°C for warmed resuscitation fluids and blood products.
Do not mistake a blanket for a warming plan. Identify the patient’s current temperature, the method that will maintain it, and who will reassess it. Wet dressings, exposed skin, cold metal, rotor wash, and repeated transfers all change the thermal problem. A casualty can leave the collection point warm and arrive in worse condition if the team treats warmth as something already solved.
Protect the patient from the transport environment. The JTS guideline includes thermal, visual, and auditory protection in transport safety. Secure equipment, preserve airway access, and ensure the receiving team can see critical monitors, dressings, and devices. Recheck after loading because position and access change inside the aircraft.
Many medics rehearse the intervention and under-rehearse the transfer. That is a readiness gap. A tourniquet application, blood administration, airway maneuver, or chest procedure is only one part of the mission. The casualty must also be reassessed, packaged, reported, loaded, monitored, and handed over.
Build a short transfer lane into training. Give the learner a casualty, a departure estimate, a MIST report with one missing time, and a transport delay. Score whether the learner finds the missing information, secures the patient, protects temperature, preserves access, and updates the receiving team. Add noise and low light after the sequence is reliable.
You can use the MilMedSim free scenario route for a focused practice rep, then carry the same handoff standard into EMS-MedSim when the training problem is transport teamwork across a broader prehospital crew. For the civilian emergency-department side of a transfer, EM-Sim is the natural companion. The skill is making the next clinician ready to act.
The Global MedOps Command approach is built around that same idea: training should make the next decision easier to execute under pressure. A scenario should end with the handoff, not when the procedure is complete.
I have taken handoffs in emergency departments, on aircraft, and during National Guard operations where the patient moved faster than the paperwork. The best handoffs were not long. They were ordered. They named the threat, the intervention, the trend, and the next decision. This article gets the central point right: packaging is part of treatment. If the casualty arrives with a loose line, an unknown medication time, or no plan for the longer trip, the transfer team starts behind.
That being said, a template will not rescue a distracted team. MIST is useful because it gives people a shared starting point, not because four letters can replace thinking. I want the medic to say what worries them next. I want the receiving team to repeat the critical facts. I want someone to own the temperature, the access, and the reassessment plan. The honest answer is that transport creates new failure points. We reduce them by rehearsing the move, not by pretending the handoff is finished at the collection point.
If you are the medic on the ground, write the times that will change the next decision and say the immediate threat first. If you are a medical officer, watch a transfer lane and score what happens after the procedure: packaging, access, warming, monitoring, and read-back. Readiness is visible in that sequence.
Start with the 9-Line request and MIST: mechanism, injuries, signs and symptoms, and treatment. Add the injury and intervention times, vital-sign trend, current airway and hemorrhage status, medications or blood products given, changes during care, and the next anticipated problem. The JTS En Route Care Patient Packaging guideline is the controlling reference for the packaging and transfer sequence.
Plan for two to three times the first transport estimate. The JTS guideline gives the example of planning for four to six hours when the initial estimate is two hours. Use that longer window to check oxygen, batteries, medications, blood products, warming, monitoring, and waste needs.
Insulate the casualty from cold surfaces, replace wet clothing when possible, use a vapor barrier when it is not possible, add external warming when available, and monitor temperature during rewarming. The JTS Hypothermia Prevention and Treatment guideline also recommends warming resuscitation fluids and blood products to 38–42°C.
Recheck the airway, breathing, circulation, monitoring, lines, tubes, dressings, tourniquets, access to the patient, and the thermal plan. Loading changes position, noise, lighting, and working space, so the pre-loading check is not the final check. The transport team should confirm who is watching each time-sensitive problem.
If you're a combat medic, corpsman, flight medic, or any provider treating casualties in the field trying to understand how AI will actually impact your clinical practice — not just the hype — I put together a free practical guide. You can download it here: AI in EM Survival Guide.