President Obama shakes hands with the Marine at the base of the steps of Marine One on the South Lawn of the White House on May 24, 2013. Obama forgot to salute the Marine as he boarded so he came back out to shake hands with the Marine. The president is traveling to Annapolis to deliver the commencement address at the United States Naval Academy. (Associated Press)

Photo by: Carolyn Kaster

President Obama shakes hands with the Marine at the base of the steps of Marine One on the South Lawn of the White House on May 24, 2013. Obama forgot to salute the Marine as he boarded so he came back out to shake hands with the Marine. The president is traveling to Annapolis to deliver the commencement address at the United States Naval Academy. (Associated Press)