Before landing, the aircraft will do a flyover of Washington DC at approximately 1,500 feet near a variety of landmarks, including the National Mall, Reagan National Airport and the National Harbor.
Discovery retired in March after completing its 39th mission. It spent a total of 365 days in space, orbited the Earth 5,830 times, and travelled 148,221,675 miles.
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A parole board in Nevada, USA, decided that the 70-year-old former football, TV and movie star can be released in October.