OBAMA'S GREETING President Barack Obama greets a member of the 131st Fighter Wing, Missouri Air National Guard, before departing on Air Force One from Lambert-St. Louis International Airport in St. Louis, Mo., April 29, 2009. Obama marked his 100th day in office with a town hall meeting in Arnold, Mo. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 533831-V-GAP51-905.jpg Photo Gallery