JOINT BASE ANDREWS, Md. -- Master Sgt. William Darion Ping, 316th Security Forces senior NCO in charge of operations, hands out water to visitors exiting the flightline here at the close of the final day of the 2010 Joint Service Open House May 16. JSOH offers an opportunity for the public to see military equipment from the Navy, Marines, Army, Air Force, and Coast Guard. (U.S. Air Force photo by Airman 1st Class Kat Lynn Justen)