|  | M-117 Conventional Bomb The M117 is a 750-pound general purpose bomb which may 
      be employed in several different configurations. The basic M117 dates from 
      the Korean War and uses a low-drag tail fin for medium and high-altitude 
      deliveries. The M117R (Retarded) uses a special fin assembly providing 
      either high-drag or low-drag release options. For low altitude deliveries, 
      the tail assembly opens four large drag plates which rapidly slow the bomb 
      and allow the aircraft to escape its blast. The M117 (Destructor) looks 
      similar to the M117R but uses a magnetic influence fuse which enables the bomb to function as a mine. The M117D is 
released in a high-drag configuration for ground implant or shallow water 
mining. It detonates when an object passing near the bomb triggers the fuse. The 
M117 series was used extensively during the Vietnam War, and B-52G aircraft 
dropped thousands of tons of M117 and M117R bombs during Operation Desert Storm.
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