January 20, 2009 10:51 am Bush Leaves Washington by Helicopter President Barack Obama and first lady Michelle Obama escort the Bushes to the helicopter that took them to Andrews Air Force Base. US & World Videos 0:47 WATCH: Comet fragment lights up the sky in Portugal 1:58 ICC seeking arrest warrants for Israeli and Hamas leaders 1:43 World reacts to death of Iran's president 1:53 Bay Area Iranian-American community reacts to Iran president's death 1:07 Cargo ship that crashed into Baltimore bridge moving back to port