RIO DE JANIERO, BRAZIL - The Coast Guard Cutter Northland moors up at a Brazilian naval base in Rio De Janeiro, Brazil, April 22, 2008. The Northland is participating in this years UNITAS exercise, a multinational naval exercise that helps test the interoperability of U.S. and foreign navies. U.S. Coast Guard photo by Public Affairs Specialist 2nd Class Nathan Henise.