Keywords: M163 Vulcan 2.JPEG Soldiers of the 1st Battalion 3rd Armored Cavalry Regiment drive an M-163 20mm Vulcan self-propelled anti-aircraft gun system to a refueling area during Operation Desert Shield http //www defenselink mil/multimedia/ 1992-04-01 SPC SAMUEL HENRY PD-USGov M163 VADS 1st Squadron 3rd Cavalry Regiment Mechanized cavalry |