U.S. Air Force and Navy firefighters use a P-23 fire truck to perform a fire suppression oscillation operation on a simulated aircraft at Joint Base Charleston, S.C., April 21, 2010. The simulation was part of a 24-hour, live-fire training session each base firefighter is required to complete annually. The P-23 has two tanks; one holds 3,300 gallons of water, and the other tank holds 500 gallons of fire-retardant foam. (U.S. Air Force photo/James M. Bowman/released)

U.S. Air Force Staff Sgt. Stephanie Pyles drives a P-23 fire truck while conducting a fire suppression oscillation operation on a simulated aircraft at Joint Base Charleston, S.C., April 21, 2010. The simulation is part of a 24-hour, live-fire training session each base firefighter is required to complete annually. The P-23 has two tanks; one holds 3,300 gallons of water, and the other tank holds 500 gallons of fire-retardant foam. Sergeant Pyles is a crew chief with the 628th Civil Engineer Squadron, Fire Emergency Services Flight. (U.S. Air Force photo/James M. Bowman/released)

U.S. Air Force Staff Sgt. Justin Sims operates the mid-ship pump panel of a P-26 water tanker vehicle during joint-service firefighting training at Joint Base Charleston, S.C., April 21, 2010. The P-26 water tanker vehicle was used to establish water resupply operations to an aircraft rescue firefighting vehicle. The P-26 holds approximately 6,000 gallons of water. Sergeant Sims is a firefighter with the 628th Civil Engineer Squadron, Fire Emergency Services Flight. (U.S. Air Force photo/James M. Bowman/released)

Air Force and Navy firefighters conduct safety checks prior to making initial entry into a simulated aircraft at Joint Base Charleston, S.C., April 21, 2010. The joint-service fire training was conducted at the crash-fire rescue training facility as part of a 24-hour, live-fire training session each base firefighter is required to complete annually. (U.S. Air Force photo/James M. Bowman/released)

Michael Ruey gives instruction to a firefighting crew during a fire on a simulated aircraft at Joint Base Charleston, S.C., April 21, 2010. The simulation was conducted with Air Force and Navy firefighters from Joint Base Charleston at the crash-fire rescue training facility as part of a 24-hour, live-fire training session each base firefighter is required to complete annually. Mr. Ruey is a fire captain with the 628th Civil Engineer Squadron, Fire Emergency Services Flight. (U.S. Air Force photo/James M. Bowman/released)

Fredrick Wade conducts water resupply operations during a joint-service, live-fire training evaluation at Joint Base Charleston, S.C., April 21, 2010. The fire training was conducted with Air Force and Navy firefighters from Joint Base Charleston at the crash-fire rescue training facility as part of a 24-hour, live-fire training session each base firefighter is required to complete annually. Mr. Wade is a fire engineer with the 628th Civil Engineer Squadron, Fire Emergency Services Flight. (U.S. Air Force photo/James M. Bowman/released)

Interior firefighting crews combat a fire, while performing simulated aircraft shutdown procedures at Joint Base Charleston, S.C., April 21, 2010. The fire was part of a training session conducted with Air Force and Navy firefighters from Joint Base Charleston at the crash-fire rescue training facility. The training session was a 24-hour, live-fire training session each base firefighter is required to complete annually. (U.S. Air Force photo/James M. Bowman/released)

U.S. Air Force and Navy firefighters crews make their initial entry into a live fire during a training session at the crash-fire rescue training facility at Joint Base Charleston, S.C., April 21, 2010. The firefighters awaiting direction outside were part of a Rapid Intervention Team, or RIT. The joint fire training was conducted with Air Force and Navy firefighters from Joint Base Charleston at the crash-fire rescue training facility as part of a 24-hour, live-fire training session each base firefighter is required to complete annually. (U.S. Air Force photo/James M. Bowman/released)

U.S. Air Force and Navy firefighters advance a water hose, also called a handline, into a simulated aircraft to assist interior firefighting crews at Joint Base Charleston, S.C., April 21, 2010. The firefighters awaiting direction outside were part of a Rapid Intervention Team, or RIT. The joint-service fire training was conducted at the crash-fire rescue training facility as part of a 24-hour, live-fire training session each base firefighter is required to complete annually. (U.S. Air Force photo/James M. Bowman/released)