Pictures End Of An Era - Atlantis Lands July 21, 2011 / 8:58 AM PDT / CBS News Atlantis Returns From Final Mission Of Space Shuttle Program Atlantis Returns From Final Mission Of Space Shuttle Program Atlantis Returns From Final Mission Of Space Shuttle Program Atlantis Returns From Final Mission Of Space Shuttle Program Atlantis Returns From Final Mission Of Space Shuttle Program Atlantis Returns From Final Mission Of Space Shuttle Program Atlantis Returns From Final Mission Of Space Shuttle Program Atlantis Returns From Final Mission Of Space Shuttle Program Workers pose with a sign marking the final mission.
