U.S. Soldiers fire bursts with MP5K submachine guns.
Battle of Gettysburg 21 Gun Salute
The Old Guard Renders 21 Gun Salute for 150th Anniversary of the Battle of Gettysburg -- 3d U.S. Infantry Regiment's (The Old Guard) Presidential Salute Battery rendering honors at the Battle of Gettysburg 150th anniversary ceremony. (U.S. Army video footage by Staff Sgt. Chris Ballentine and Sgt. Paul Sanchez)