60th Engineer Squadron fire chief John Speakman and fire fighter Staff Sgt. John Sherman trun from a small sea of fire retardant foam that was unintentionally released in an aircraft hanga,r temporarily covering a small portion of the flight line at Travis AFB, Calif., Sept. 24, 2013. The non-hazardous foam is similar to dish soap, which eventually dissolved into liquid, which was helped by high winds. 60th Air Mobility Wing fire fighters helped control the dispersion by using powerful fans and covering drains. No people or aircraft were harmed in the incident. (U.S. Air Force photo/Ken Wright/Released)