US shuttle program's last spacewalk begins

CAPE CANAVERAL, Fla. - One of NASA's most experienced spacewalkers paired with its newest on Friday for the space shuttle program's last servicing call outside the International Space Station.
Astronauts Mike Fincke and Greg Chamitoff floated outside the space station's airlock at around 12:30 a.m. EDT  to begin the fourth and final spacewalk planned during shuttle Endeavour's 16-day mission, the next to last in the 30-year-old US space shuttle program.