I flew C-97s through the Berlin Corridors in the early 70s
armed with a 48 inch camera taking snapshots of those airfields and other interestings sights on the ground.You can get some great pictures with a camera longer than your arm. We also had EWOs on board recording all the Russian radar signals. We would ask for our “own navigation” and wander to within 4 miles of the corridor edge to get in position to shoot the targets we wanted. Top Secret stuff-the Russians didn’t know a thing. Right. We had a photo of an airfield that had “Merry Xmas” and our squadron number plowed out of the snow on the ramp. Saw Migs all the time. Somehow managed to not get shot down. All at 190 knots.