An OA-4M 'Skyhawk' on display at the Grand Forks Air Force Base (GFAFB) 'Friends And Neighbors Day' on May 27th 1989.
Stationed at NARF MCAS Cherry Point, NC.
Twenty-three TA-4Fs were converted to the OA-4M designation for FastFAC (Fast Forward Air Controller) missions in the Vietnam War. OA-4M modifications included a ground control bombing system, a KY-28 secure voice system, a canted midair refueling probe, extra cockpit side armor plating, an APN-194 altimeter, and ARC-159 radio and ARC-114 VHF radio. Perhaps the most visible change was the fitting of the dorsal electronics hump, neatly faired into the rear of the two-seat canopy. (a4skyhawk.org)