May 20, 2012 (36 images)

U.S. First Lady Michelle Obama tours the Gary Comer Youth Center with the spouses of other NATO leaders on May 20, 2012 in Chicago. UPI/Brian Kersey

Washington Nationals pitcher Stephen Strasburg delivers a pitch in the fifth inning of MLB game against the Baltimore Orioles on May 20, 2012 in Washington, DC. Strasburg gave up one earned run in five innings and also hit a homer as the Nationals won 9-3. UPI/Pat Benic

NATO Secretary General Anders Fogh Rasmussen addresses the media in an opening statement to begin the 2012 NATO summit at McCormick Place, in Chicago, May 20, 2012. NATO's biannual summit will address the future of member nations commitment in Afghanistan. UPI Photo/Mark Cowan

Phoenix Coyotes goalie Mike Smith (41) makes a save of a shot by Los Angeles Kings center Colin Fraser (24) in the third period of game four of the Western Conference Finals of the NHL Stanley Cup Playoffs at Staples Center in Los Angeles on May 20, 2012. Coyotes won 2-0. Kings lead the best of 7 series 3-1. UPI / Jayne Kamin-Oncea