In 1971, while stationed at Nha Trang AB, Vietnam, I was fortunate to work on the C-130E Rivet Clamp aircraft (later upgraded and designated "Combat Talon"). I was an ECM technician assigned to First Flight Detachment which was, at that time, part of the 90th SOS. These were specially modified C-130 aircraft that were painted in a black and green camouflage scheme. This gave them a very sinister look. Their many unique modifications included terrain-following radar, ECM sensors. Low Light Level TV, and a ground sensor for locating vehicles on the Ho Chi Min trail. They were also equipped with