Republic F-105G Wild Weasel Suppression of Enemy Air Defenses or SEAD version of the Thunderfchief was a special mission aircraft designed to hunt and destroy North Vietnamese target tracking radars of the SA-2 GUIDELINE Surface to Air Missile or SAM. The F-105G incorporated a considerable amount of new SEAD-specific avionics, including an upgraded Radar Homing and Warning (RHAW) system which required a redesign of the wingtips. To free outboard hard points for additional weapons, the Westinghouse AN/ALQ-105 electronic countermeasures were permanently installed in two long blisters on the underside of the fuselage. Thirty aircraft were fitted with pylons to carry the AGM-78 Standard anti-radiation missile. On a typical mission, the F-105G carried two Shrikes on outboard pylons, a single Standard on an inboard pylon balanced by a 450 US gal (1,700 L) fuel tank on the other side, and a 650 US gal (2,500 L) centerline fuel tank.
COOTIE was assigned to the 333rd Tactical Fighter Squadron, 355th Tactical Fighter Wing at Royal Thai Air base Takhli Thailand. This particular aircraft was credited with shooting down three North Vietnamese MiG-17 Fresco fighters, one kill from dropping its centerline bomb rack in the flight path of the MiG!