First responders from Joint Base Charleston take part in a Mass Casualty Exercise March 28, 2014, at JB Charleston – Air Base, S.C. The purpose of the exercise was to test the ability of JB Charleston first responders in the event of an emergency.(U.S. Air Force photo / Senior Airman Tom Brading)

Marcus Shephard, 628th Civil Engineer Squadron lead fire fighter hoses down a training aircraft model during a Mass Casualty Exercise March 28, 2014, at Joint Base Charleston – Air Base, S.C. The purpose of the exercise was to test the ability of JB Charleston first responders in the event of an emergency. (U.S. Air Force photo / Senior Airman Tom Brading)

Airman 1st Class Melvin McCormick, 628th Civil Engineer Squadron fire fighter, brings a simulated victim to safety during a Mass Casualty Exercise March 28, 2014, at Joint Base Charleston – Air Base, S.C. The purpose of the exercise was to test the ability of JB Charleston first responders in the event of an emergency. (U.S. Air Force photo / Senior Airman Tom Brading)

Tech Sgt. Jeffrey Kronenberger , Marcus Shephard and Staff Sgt. Damien Montero, 628th Civil Engineer Squadron fire fighters, take part in a Mass Casualty Exercise March 28, 2014, at Joint Base Charleston – Air Base, S.C. The purpose of the exercise was to test the ability of JB Charleston first responders in the event of an emergency. (U.S. Air Force photo / Senior Airman Tom Brading)

Staff Sgt. Damien Montero, 628th Civil Engineer Squadron fire fighter, looks through the hollowed shell of the simulated aircraft during a training exercise March 28, 2014 at Joint Base Charleston – Air Base, S.C. The training was the Mass Casualty Exercise, and tested first responders’ readiness to take action at a moment’s notice in the event of an emergency. (U.S. Air Force photo / Senior Airman Tom Brading)

First responders from Joint Base Charleston take part in a Mass Casualty Exercise March 28, 2014, at JB Charleston – Air Base, S.C. The purpose of the exercise was to test the ability of JB Charleston first responders in the event of an emergency. (U.S. Air Force photo / Senior Airman Tom Brading)

A simulated victim lays waiting for help during a training exercise March 28, 2014, at Joint Base Charleston – Air Base, S.C. First responders from JB Charleston took part in a Mass Casualty Exercise to test the readiness to test the ability of JB Charleston first responders in the event of an emergency. (U.S. Air Force photo / Senior Airman Tom Brading)

First responders from Joint Base Charleston take part in a Mass Casualty Exercise March 28, 2014, at JB Charleston – Air Base, S.C. The purpose of the exercise was to test the ability of JB Charleston first responders in the event of an emergency. (U.S. Air Force photo / Senior Airman Tom Brading)

First responders from Joint Base Charleston take part in a Mass Casualty Exercise March 28, 2014, at JB Charleston – Air Base, S.C. The purpose of the exercise was to test the ability of JB Charleston first responders in the event of an emergency. (U.S. Air Force photo / Senior Airman Tom Brading)

First responders from Joint Base Charleston take part in a Mass Casualty Exercise March 28, 2014, at JB Charleston – Air Base, S.C. The purpose of the exercise was to test the ability of JB Charleston first responders in the event of an emergency. (U.S. Air Force photo / Senior Airman Tom Brading)

David Hawkins, 628th Civil Engineer Squadron fire fighter, looks on as first responders from Joint Base Charleston take part in a Mass Casualty Exercise March 28, 2014, at JB Charleston – Air Base, S.C. The purpose of the exercise was to test the ability of JB Charleston first responders in the event of an emergency. (U.S. Air Force photo / Senior Airman Tom Brading)

Staff Sgt. Damien Montero, 628th Civil Engineer Squadron fire fighter, continues working during the Mass Casualty Exercise March 28, 2014, at JB Charleston – Air Base, S.C. The purpose of the exercise was to test the ability of JB Charleston first responders in the event of an emergency. (U.S. Air Force photo / Senior Airman Tom Brading)