High Quality Content by WIKIPEDIA articles! Three locations in the United States of America were the sites of landings of the Space Transportation System (Space Shuttle). Each site included runways of sufficient length to provide adequate distance for the slowing-down of a returning space shuttle. The prime landing site was the Shuttle Landing Facility at the Kennedy Space Center, a landing strip constructed for the purpose of space shuttle landings. Landings also occurred at Edwards Air Force Base in California and one at White Sands Space Harbor in New Mexico. No space shuttle landed on a dry lakebed runway after 1991. International landing sites were available in the event of a Transoceanic Abort Landing (TAL) situation, and other sites in the United States and Canada were available in the event of an East Coast Abort Landing (ECAL) situation. Space shuttle landings were intended to regularly take place at Vandenberg Air Force Base in California for Department of Defense missions launched from the site, but none occurred due to the cancellation of all launches from Vandenberg.