US President George W. Bush walks to Marine One prior to departure from the South Lawn of the White House in Washington, DC, on December 22, 2008. Bush is travelling to visit wounded veterans at Walter Reed Army Medical Center.<
White House physician Richard Tubb, seen at left, accompanies President George W. Bush as he arrives for a visit at Walter Reed Army Medical Center where he met with wounded soldiers in Washington, Monday, Dec. 22, 2008. Tubb performed an MRI of Bush's left shoulder in an attempt to understand why he has experienced pain recently.
President George W. Bush is accompanied by Army Col. Norvell V. Coots, commander of the Walter Reed Army Health Care System, before making a statement to reporters at Walter Reed Army Medical Center where he met with wounded soldiers in Washington, Monday, Dec. 22, 2008.