Sgt. Gary Ward, Nuclear Biological and Chemical non-commissioned officer from Aberdeen, Md., with the 130th Chemical Company shows visiting children his Biological Integrated Detection System vehicle during the 2009 Joint Service Open House at Andrews Air Force Base from May 15-17. Vehicles and aircraft from across the military and civilian world were onhand in an effort to give people a chance to see what the military does. In addition to the displays, the Air Force Thunderbirds and Army Golden Knights parachute team also performed for the thousands in attendance.