Staff Sgt. Faith Ebert, 19th Combat Airbase Squadron mental health technician, applies burn pads to Tech. Sgt. Marnicia Toliver, 937th Training Readiness Squadron instructor, role-playing as a burn victim during a mass casualty (MASCAL) scenario on Joint Base San Antonio-Camp Bullis, Texas, Dec. 18, 2025. The MASCAL scenario was the culmination event for a Rehearsal of Concept, and validated a new framework demonstrating a Unit of Action’s readiness to establish medical support on a bare base using Role 1 medical care. (U.S. Air Force photo by Joshua J. Garcia)

Sterile saline is applied to a simulated burn victim’s wounds during a mass-casualty scenario on Joint Base San Antonio-Camp Bullis, Texas, Dec. 18, 2025. Saline is used to cleanse the wound removing potential debris and bacteria from the burn area. (U.S. Air Force photo by Joshua J. Garcia)

Capt. Ann Walling, 19th Operational Medical Readiness Squadron clinical nurse, applies saline to the wounds of a simulated burn victim during a mass casualty event on Joint Base San Antonio-Camp Bullis, Texas, Dec. 18, 2025. Applying sterile saline to a burn allows for gentle cleansing and irrigation to remove potential debris and bacteria. (U.S. Air Force photo by Joshua J. Garcia)

Staff Sgt. Blanca Sanchez, 19th Medical Group medical technician, and Maj. Skylar McMath, 19th Combat Airbase Squadron physical therapist, secure a splint to a leg wound during a mass casualty (MASCAL) scenario on Joint Base San Antonio-Camp Bullis, Texas, Dec. 18, 2025. The MASCAL scenario was the culmination event for a Rehearsal of Concept, and validated a new framework confirming a Unit of Action’s ability to rapidly establish medical support on a bare base and provide Role 1 medical care. (U.S. Air Force photo by Joshua J. Garcia)

Staff Sgt. Blanca Sanchez, 19th Medical Group medical technician, wraps a simulated wounded leg during a mass casualty (MASCAL) scenario on Joint Base San Antonio-Camp Bullis, Texas, Dec. 18, 2025. The MASCAL scenario was the culmination event for a Rehearsal of Concept that tested and validated new framework showcasing a Unit of Action’s capability to provide Role 1 medical care in potential austere environments. (U.S. Air Force photo by Joshua J. Garcia)

Medical personnel perform triage on a simulated mass casualty (MASCAL) victim during a Rehearsal of Concept scenario on Joint Base San Antonio-Camp Bullis, Texas, Dec. 18, 2025. Role-players and training mannequins were used as patients during the MASCAL to add realism to the scenario showcasing the Unit of Action’s ability to react to various medical situations. (U.S. Air force photo by Joshua J. Garcia)

Tech. Sgt. Eiad Kneifati, 59th Medical Wing core laboratory Non-Commissioned Officer in Charge, right, and Capt. Svetlana Morrell, 19th Combat Airbase Squadron flight surgeon, perform initial triage to a Tech. Sgt. Samuel Stacy, 579th Training Readiness Support Squadron instructor, role-playing as a simulated victim during a mass casualty (MASCAL) scenario on Joint Base San Antonio-Camp Bullis, Texas, Dec. 18, 2025. The MASCAL scenario was the culmination event for a Rehearsal of Concept that tested the capability of a deployed Unit of Action’s ability to provide Role 1 medical care in austere environments. (U.S. Air Force photo by Joshua J. Garcia)

Capt. Ann Walling, 19th Operational Medical Readiness Squadron clinical nurse, and Capt. Parker Awerkamp, 19th Combat Airbase Squadron family medicine physician, provide medical treatment to a simulated burn victim during a mass casualty scenario on Joint Base San Antonio-Camp Bulis, Texas, Dec. 18, 2025. Role players and training mannequins were used to add realism to the MASCAL scenario, the culmination event for a Rehearsal of Concept that tested and validated new framework for a Unit of Action to deploy and provide Role 1 medical care in potential hostile environments. (U.S. Air Force photo by Joshua J. Garcia)

Simulated victims are triaged and provided medical care during a mass casualty (MASCAL) scenario on Joint Base San Antonio-Camp Bullis, Texas, Dec. 18, 2025. The MASCAL scenario was the culmination event for a Rehearsal of Concept that tested a newly formed framework’s capability for a Unit of Action to perform Role 1 medical care to personnel while in potential hostile environments. (U.S. Air Force photo by Joshua J. Garcia)

A TMT60 tent acts as a clinic during a Rehearsal of Concept for a newly designed Role 1 framework that could allow patients to return to duty while in deployed locations on Joint Base San Antonio-Camp Bullis, Texas, Dec. 18, 2025. The RoC tested more so the capability of the framework rather than the personnel participating in the scenario. (U.S. Air Force photo by Joshua J. Garcia)

Tony Garcia, Air Force Medical Modeling and Simulation Training contractor with the 937th Training Readiness Support Squadron, uses makeup to apply burn-mark moulage to Tech. Sgt. Marnicia Toliver, 937th TRSS instructor, prior to Toliver role-playing as a victim in a mass casualty scenario on Joint Base San Antonio-Camp Bullis, Texas, Dec. 18, 2025. Moulage is used to add a sense of realism to the scenario and give realistic visual cues for personnel to respond and provide medical treatment to. (U.S. Air Force photo by Joshua J. Garcia)

Tony Garcia, Air Force Medical Modeling and Simulation Training contractor with the 937th Training Readiness Support Squadron, uses makeup to apply burn-mark moulage to Tech. Sgt. Marnicia Toliver, 937th TRSS instructor, prior to Toliver role-playing as a victim in a mass casualty scenario on Joint Base San Antonio-Camp Bullis, Texas, Dec. 18, 2025. Moulage is used to add a sense of realism to the scenario and give realistic visual cues for personnel to respond and provide medical treatment to. (U.S. Air Force photo by Joshua J. Garcia)

Christopher Richardson, Air Force Medical Modeling and Simulation Training contractor with the 937th Training Readiness Support Squadron, applies puddy to make a simulated wound to Tech. Sgt. Jan Ronel Recano, 937th TRSS instructor prior to a mass casualty scenario on Joint Base San Antonio-Camp Bullis, Texas, Dec. 18, 2025. The mass casualty scenario was the culmination event for a Rehearsal of Concept testing and validating a Unit of Action’s Role 1 capability to return Airmen to action. (U.S. Air Force photo by Joshua J. Garcia)

Christopher Richardson, Air Force Medical Modeling and Simulation Training contractor with the 937th Training Readiness Support Squadron, applies puddy to make a simulated wound to Tech. Sgt. Jan Ronel Recano, 937th TRSS instructor prior to a mass casualty scenario on Joint Base San Antonio-Camp Bullis, Texas, Dec. 18, 2025. The scenario would validate a new framework demonstrating a Unit of Action’s ability to establish medical operations and effectively perform Role 1 medical care. (U.S. Air Force photo by Joshua J. Garcia)