KENNEDY SPACE CENTER Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, vists with U.S. Sen. Patrick Leahy of Vermont and his son, Mark, at the launching of Space Shuttle Atlantis, NASA's final space shuttle mission, at Kennedy Space Center in Cape Canaveral, Fla., July 8, 2011. SHARE IMAGE: Download Image: Full Size (0.06 MB) Photo By: VIRIN: 047407-U-SJT56-531.jpg Photo Gallery