Endeavour Crew Includes Twittering Skipper, Singer, ER Doc

CAPE CANAVERAL, Fla. — The astronauts headed to the international space station include a Twittering skipper, a classically trained musician who named her son after one of Columbia's fallen astronauts, and a former Navy SEAL who went into Afghanistan two weeks after the Sept. 11, 2001, terrorist attacks. Space shuttle Endeavour's motley crew of seven is scheduled to