Seaman Darion Black, left, general duty corpsman with Robert M. Casey Medical and Dental Clinic, and a firefighter with the station Fire Department work together to assist Lance Cpl. David Mayorga, a patrolman with the Provost Marshal’s Office, as part of a mock scenario during a mass casualty evacuation drill on the flight line aboard Marine Corps Air Station Iwakuni, Japan, April 2, 2014. - Seaman Darion Black, left, general duty corpsman with Robert M. Casey Medical and Dental Clinic, and a firefighter with the station Fire Department work together to assist Lance Cpl. David Mayorga, a patrolman with the Provost Marshal’s Office, as part of a mock scenario during a mass casualty evacuation drill on the flight line aboard Marine Corps Air Station Iwakuni, Japan, April 2, 2014.