Fire truck mechanics stop, drop and keep them rolling
Senior Airman William Concepcion, 6th Logistics Readiness Squadron fire truck mechanic, prepares to conduct a relay test on a power distribution panel, May 4, 2015 at MacDill Air Force Base, Fla. Fire truck maintainers are experts in gasoline and diesel engines, electrical systems, drivetrain components, steering, brakes, suspension, and hydraulic and air systems. (U.S. Air Force photo by Senior Airman Melanie Bulow-Gonterman/Released)