Space shuttle Endeavour flies past the US and mission flags after launch at Cape Canaveral, Fla., on Monday, May 16, 2011.  (AP Photo/John Raoux)

Photo by: John Raoux

Space shuttle Endeavour flies past the US and mission flags after launch at Cape Canaveral, Fla., on Monday, May 16, 2011. (AP Photo/John Raoux)