First Lady Michelle Obama Delivers Remarks During The Community Challenge

First Lady Michelle Obama delivers remarks during a Joining Forces Community Challenge event on the South Lawn of the White House, April 11, 2012. Participants, from left, included: Gen. Martin Dempsey, Chairman of the Joint Chiefs of Staff; Dr. Jill Biden; Tom Brokaw; and Moranda Hern, co-founder of The Sisterhood of the Traveling BDUs. (Official White House Photo by Sonya N. Hebert)