U.S. Air Force Staff Sgt. Derek Dobbins, 633rd Civil Engineer Squadron Fire Department crew chief, checks the gauges on an alert vehicle inside the fire department on Langley Air Force Base Va., Jan. 15, 2013. These levels must be monitored daily to ensure vehicles are equipped and ready to respond to an emergency. (U.S. Air Force photo by Staff Sgt. Jeff Nevison/Released)