 Complete the following phrase:  Subsequent to the shoot-downs of the may day U-2 reconnaissance plane, and a later shoot down in China, Kennedy ordered a 45-day cessation of U-2 flights, including flights over Cuba that had recently discovered the first Soviet high altitude Surface to Air Missile launcher site. There were fears of antagonism, and an election was around the corner. During this photo gap the CIA received a report from a source from Operation Mongoose, a road watcher describing covered tractor trailers moving that were shaped like large telephone poles. Control of U-2 flights was moved to the Air Force, and October 14 U-2 flights resumed. The 