Space Shuttle pilot Greg Johnson, left, and commander Mark Kelly leave the Operations and Checkout Building moments before the launch was scrubbed because of technical problems at the Kennedy Space ... more 
Space Shuttle pilot Greg Johnson, left, and commander Mark Kelly leave the Operations and Checkout Building moments before the launch was scrubbed because of technical problems at the Kennedy Space Center in Cape Canaveral, Fla., Friday, April 29, 2011. less 
1 / 1
Associated Press | Photo By John Raoux
Fri, Apr 29, 2011 2:05 PM EDT