Corona (satellite) retrieved two days later by a C-119 Flying Boxcar transport plane. This was the first successful return of photographic film from orbit. In comparison, Sputnik 5 was launched into orbit on August 19, 1960, one day after the launch of Discoverer 14. Sputnik 5 was a biosatellite that took into orbit the two Soviet space dogs, Belka and Strelka, and then safely returned them to the Earth . At least two launches of "Discoverers" were used to test satellites for the Missile Defense Alarm System (MIDAS), an early missile-launch-detection program that used infrared cameras to detect the heat signature of
Korabl-Sputnik 2 20 August, the day after its launch. Telemetry revealed that one dog had suffered seizures during the fourth orbit, and it was decided to limit the first manned flight to three orbits. All of the animals were recovered safely, and a year later Strelka had a litter of puppies, one of which was sent to First Lady of the US Jacqueline Kennedy as a goodwill present from the Soviet Union. President Kennedy's advisers initially opposed taking the dog for fear that the Soviets might have planted microphones in its body to listen in on national defense meetings. Strelka and Belka