Mrs. Obama thumbs up for Nurses'

First lady Michelle Obama gives thumbs up as she arrives at the University of Pennsylvania in Philadelphia, Wednesday, April 11, 2012, to announce a major initiative by more than 150 of America's leading nursing organizations and more than 450 nursing schools in 50 states and territories to ensure our nation's nurses are prepared to help meet the unique health needs of service members, veterans, and their families. (AP Photo/Alex Brandon)