The “Skysweeper” weapon system used a radar guided anti-aircraft targeting system. It also boasted twin Drum Magazines. STATS - Muzzle velocity: 2,800 feet per second, Range: 14,415 yards, Rate of Fire: 45 rounds per minute. Two Skysweepers are on display. These pictures are from a military vehicle museum the American Society of Military History based in South El Monte, CA. www.tankland.com These pictures are Copyright 2009.