President Barack Obama and the First Lady Michelle Obama wave farewell at Galeao Air Base, Rio de Janeiro, Brazil, on March 21, 2011, as they depart the city for the next stop on the President's March 19-23 Latin America tour. Thirty-five Airmen from the 621st Contingency Response Wing, Joint Base McGuire-Dix-Lakehurst, N.J., were tasked with expanding capability at airfields in Brasilia and Rio de Janeiro, Brazil, Santiago, Chile and San Salvador, El Salvador in support of air mobility requirements for presidential personnel and cargo.(U.S. Air Force Photo/Tech. Sgt. Laura K. Deckman)