minutes following the first detection of Atlantis, two sonic booms were heard at Kennedy Space Center as the Orbiter dropped below the sound barrier three minutes prior to touchdown. Commander Jett took control of Atlantis a minute later, and, with Kennedy Space Center Runway 33 in sight, began bringing his ship in for a landing.Atlantis main gear touched down at 06:21:30 EDT on Runway 33 at the Space Shuttle Landing Facility at Kennedy Space Center, with the nose gear following 6 seconds later at 06:21:36 EDT, and, after launch, the Orbiter's wheels came to a stop at 06:22:16 EDT, bringing mission STS-115 to an end. The morning's landing was considered a night landing as it took place about 48 minutes before sunrise, and as such was the 21st night landing for the Space Shuttle Program. It was the 63rd landing at Kennedy Space Center, as well as the 27th mission for Atlantis. Post flight While working on the Atlantis orbiter, NASA technicians discovered that one of the spacecraft's radiator panels showed evidence of micrometeorite damage. A hole was observed which was reported to be about 2.7 mm (0.108 in) in diameter. Debris analysis NASA's Mission Management Team conducted a detailed analysis of data from many sources including ground imagery, radar, shuttle inspections using the Canadarm and from the space station. By Day 2 they pinpointed a handful of launch debris events, and drew a preliminary conclusion that the effect was minimal. Later that day, NASA agency engineers decided that additional heat shield inspections were not required. The preceding only relates to debris shed immediately during or after launch, and not the debris observed on September 19, 2006. Not mentioned was a large debris event during launch at 48 seconds near max Q. Because it happened on the ET side opposite the Orbiter, it was never a danger to the Shuttle. By the origin from near the top of the ET, it presents a new source of debris and is therefore of concern for further missions. Wake-up calls A tradition for NASA spaceflights since the days of Gemini, mission crews are played a special musical track at the start of each day in space. Each track is specially chosen, often by their family, and usually has special meaning to an individual member of the crew, or is applicable to their daily activities. Contingency mission STS-300 was the designation given to the