The B-52G variant of the Stratofortress was introduced in 1958. It was the first of the "short tail" versions of the aircraft with the tail a total of 8 feet shorter than the earlier versions. Other modifications significantly reduced the weight of the aircraft and moved the rear gunner from the tail of the plane to the main crew compartment where he operated his guns by remote control. The "G" model participated in the B-52s second war in 1991 with 74 aircraft dropping a total of 36,590 bombs with a total weight of 11,742,000 pounds or 5,781 tons and participating in what were then the longest combat missions ever.