673d Medical Group Airmen transport a simulated patient from a bus into a C-17 Globemaster III during the EnRoute Patient Staging System exercise at Joint Base Elmendorf-Richardson, Alaska, April 3, 2017. The ERPSS provides patient reception and limited emergent intervention, and ensures patients are medically and administratively prepared for flight in a safe and timely aeromedical evacuation. (Photo by Airman 1st Class Christopher R. Morales)

673d Medical Group Airmen transport a simulated patient from a bus into a C-17 Globemaster III during the EnRoute Patient Staging System exercise at Joint Base Elmendorf-Richardson, Alaska, April 3, 2017. The ERPSS provides patient reception and limited emergent intervention, and ensures patients are medically and administratively prepared for flight in a safe and timely aeromedical evacuation. (Photo by Airman 1st Class Christopher R. Morales)

673d Medical Group Airmen transport a simulated patient from a C-17 Globemaster III into a bus during the EnRoute Patient Staging System exercise at Joint Base Elmendorf-Richardson, Alaska, April 3, 2017. The ERPSS provides patient reception and limited emergent intervention, and ensures patients are medically and administratively prepared for flight in a safe and timely aeromedical evacuation. (Photo by Airman 1st Class Christopher R. Morales)

673d Medical Group Airmen transport a simulated patient from a C-17 Globemaster III into a bus during the EnRoute Patient Staging System exercise at Joint Base Elmendorf-Richardson, Alaska, April 3, 2017. The ERPSS provides patient reception and limited emergent intervention, and ensures patients are medically and administratively prepared for flight in a safe and timely aeromedical evacuation. (Photo by Airman 1st Class Christopher R. Morales)

Technical Sgt. Ashley Jackson and other 673d Medical Group Airmen lift a simulated patient and a continuous positive airway pressure machine during the EnRoute Patient Staging System exercise at Joint Base Elmendorf-Richardson, Alaska, April 3, 2017. The ERPSS provides patient reception and limited emergent intervention, and ensures patients are medically and administratively prepared for flight in a safe and timely aeromedical evacuation. (Photo by Airman 1st Class Christopher R. Morales)

U.S. Air Force Capt. Paul Padilla (right) and Staff Sgt. Tiffany Smith (center) secure a simulated patient in a C-17 Globemaster III during the EnRoute Patient Staging System exercise at Joint Base Elmendorf-Richardson, Alaska, April 3, 2017. The ERPSS provides patient reception and limited emergent intervention, and ensures patients are medically and administratively prepared for flight in a safe and timely aeromedical evacuation. (Photo by Airman 1st Class Christopher R. Morales)

673d Medical Group Airmen transport a simulated patient from a C-17 Globemaster III into a bus during the EnRoute Patient Staging System exercise at Joint Base Elmendorf-Richardson, Alaska, April 3, 2017. The ERPSS provides patient reception and limited emergent intervention, and ensures patients are medically and administratively prepared for flight in a safe and timely aeromedical evacuation. (Photo by Airman 1st Class Christopher R. Morales)

U.S. Air Force captains Paul Padilla (right) and Leslie Mead, 673d Medical Group, build inflight-patient stands inside a C-17 Globemaster III for an EnRoute Patient Staging System exercise at Joint Base Elmendorf-Richardson, Alaska, April 3, 2017. The ERPSS provides patient reception and limited emergent intervention, and ensures patients are medically and administratively prepared for flight in a safe and timely aeromedical evacuation. (Photo by Airman 1st Class Christopher R. Morales)

U.S. Air Force Capt. Leslie Mead, 673d Medical Group, gives the signal for the next simulated patient to be transported into a C-17 Globemaster III during the EnRoute Patient Staging System exercise at Joint Base Elmendorf-Richardson, Alaska, April 3, 2017. The ERPSS provides patient reception, limited emergent intervention, and ensures patients are medically and administratively prepared for flight in a safe and timely aeromedical evacuation. (Photo by Airman 1st Class Christopher R. Morales)

U.S. Air Force Maj. Steven Shea, 673d Medical Group, speaks to all the players and leads the EnRoute Patient Staging System exercise at Joint Base Elmendorf-Richardson, Alaska, April 3, 2017. The ERPSS provides patient reception, limited emergent intervention, and ensures patients are medically and administratively prepared for flight in a safe and timely aeromedical evacuation. (Photo by Airman 1st Class Christopher R. Morales)