being tested as a reconnaissance option for disabled satellites; RAFT''' (Radar Fence Transponder) is a pair of 5" cubes built by the U.S. Naval Academy which will test space radar systems and also act as data relays for mobile ground communications. December 21 (Flight day 13) Flight day 13 began for the astronauts at 12:17 UTC. Discovery's crew launched the ANDE (Atmospheric Neutral Density Experiment) microsats for the Naval Research Laboratory, which were designed to measure the density and composition of the low Earth orbit atmosphere in order to help better predict the movements of objects in orbit, but one of the satellites failed to emerge from its launch canister. ANDE is currently transmitting data, and emerged from the canister approximately 30 minutes after its launch according to satellite tracking data. December 22 (Flight day 14 – Landing) Flight day 14 began for the astronauts at 12:17 UTC. Preparations for landing were complete. High cross-winds precluded a landing at Edwards Air Force Base while clouds and showers were an issue at Kennedy Space Center Shuttle Landing Facility on the first orbit. That combination raised the possibility of the first landing at White Sands Space Harbor since STS-3 in 1982. Had landing taken place at White Sands, it could have taken as long as 60 days to return the orbiter to Kennedy Space Center. The first landing opportunity at Kennedy Space Center was abandoned due to unfavorable weather conditions. However, at 21:00 UTC coordinates were sent to the shuttle to re-attempt a landing at Kennedy along runway 15, as the first contingency landing attempt at Edwards had been called off due to high crosswinds. The de-orbit burn for Kennedy occurred at 21:27 UTC, having been authorized at 21:23 UTC, and was finished at 21:31 UTC. Since the landing time coincided with the local sunset time 17:32 EST (22:32 UTC), the shuttle landing was not considered a night landing, as official rules for a night landing are sunset + 15 minutes; however, the xenon runway lighting system was in use. Discovery touched down 30 seconds before the expected time. Landing time at Kennedy was at 17:32 EST (22:32 UTC). Contingency planning STS-301 STS-301 was the designation given to the Contingency Shuttle Crew Support mission which would have been launched in the event Space Shuttle Atlantis had become disabled during STS-115. It was a modified version of the STS-116 mission, which would have