degrees per second. The TAT-102A was designated XM64 by the US Army. XM65/M65 The Cobra Missile System is a functional development of the XM26 and the TOW missile system developed for the failed AH-56 helicopter. Originally designed for the AH-1Q and AH-1S Cobras, the AH-1F Modernized Cobra was also rebuilt to use the system. The original iteration of the system comprises launchers allowing for four BGM-71 TOW missiles per aircraft pylon to be carried, and a "Telescopic Sight Unit" (TSU), to allow for targeting and guidance of the missile. The TSU has been upgraded with the LAAT (Laser-Augmented Airborne TOW), a day/night range finder, and C-NITE (Cobra-Night Imaging Thermal Equipment), a thermal imagine/FLIR system specifically for the AH-1S and AH-1F Cobra helicopters. M97 Series and A/A49E-7 (GE Universal Turret) The standard fixed armament system for the US Army's AH-1S Upgunned Cobra (eventually redesignated AH-1E Enhanced Cobra Armament System or ECAS) and the AH-1S Modernized Cobra (eventually redesignated the AH-1F), as well as, the US Marine Corps' AH-1J, AH-1T, AH-1W, and AH-1Z helicopters. The system was designed to fit either the M197 20 mm three barreled cannon or the XM188 30 mm three barreled cannon. In practice the M197 was the standard fit and the XM188 was not adopted for service. The turret has 110 degrees of motion in azimuth, 21 degrees of elevation, and 50 degrees of depression, with a slew rate in azimuth of 80 degrees per second and in elevation and depression of 60 degrees per second. As with the M28 series, the specifics between variants of the M97 are vague. Five Standard A models are known to exist, M97/A1-A4. Sources suggest that individual variants of the turret were specific to certain variants of the AH-1 as with the M28 series. The M97A1 (and possibly the M97) was fitted to the AH-1S Upgunned Cobra, the M97A2/A3 to the AH-1S Modernized Cobra (AH-1F), and the M97A4 to production AH-1Fs. Other sources say that the M97A3 was refitted to AH-1E ECAS and the M97A2 was the initial armament for the AH-1S Modernized Cobra, agreeing that the M97A1 was the original fit to the AH-1S Upgunned Cobra. There is also the possibility that the differences have something to do with the associated equipment for the M197 cannon, including the use of the M89 or M89E1 delinking feeder. The M97 was also fitted to the AH-1J, but it is unclear if the