Most of this motley collection of flying machines did electronic intercept in one form or another, but the star of the stable was an RC-97, that took pictures with the largest camera ever used in U.S. aerial reconnaissance. It was called "Pie Face," weighed 6500 pounds with its mount, had a lens-to-film focal length of 240 inches (20 feet) and could take oblique photographs of objects 70 miles away. Each photograph was 18 x 36 inches and came from the largest roll of film ever ordered from Kodak. This huge camera was used about twelve times a month along the Berlin Air Corridors.
Unlike most reconnaissance planes, those belonging to the 7405th had no telltale radar bulges, antennas, or other external paraphernalia that would give them away. They therefore appeared innocuous. An RC-97 belonging to the squadron looked like a transport plane, so much so that the men who flew in it called it a C-97. One of the planes carried a 48-inch oblique looking panoramic camera, a 12-inch vertical looking panoramic camera, an infrared scanner, a forward-looking infrared sensor (FLIR), and four electronic intercept stations. The camera ports were hidden behind sliding external panels or via retractable domes. All sensors, including the electronic eavesdropping equipment, were secreted below the deck in the RC-97. The planes could carry real cargo and unwitting passengers while collecting intelligence. The C-130s carried their sensors in fake cargo containers.
Naturally, the men of the 7405th wanted to believe they were fooling the opposition, but they weren't and they knew it. Of all the planes that flew the Berlin Air Corridors, only those of the 7405th asked to be allowed to navigate on their own, following routes that were different than other aircraft, routinely wandering 500 feet from their assigned altitude, and made random flight patterns. The deviations were carefully noted on the ground. Furthermore, both the Russians and East Germans took their own telephoto pictures of the ambling aircraft at below the 10,000-foot maximum altitude that clearly showed open camera doors. And it couldn't have taken counterintelligence specialists at Tempelhof Airfield long to conclude something suspicious was going on when as many as fifteen men emerged from one of the planes, had lunch, then climbed back into the plane and left to return to West Germany -- without delivering a single passenger or cargo, or leaving with them. The "cover" was so obviously transparent that the crews called themselves the "Berlin for Lunch Bunch."
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