The First Lady and Dr. Biden wait to take the stage

First Lady Michelle Obama and Dr. Jill Biden wait to take the stage during "A Celebration of Service," a USO comedy show celebrating Military Appreciation Month as well as the 5th anniversary of Joining Forces and the 75th anniversary of the USO, at Joint Base Andrews, Md., May 5, 2016. (Official White House Photo by Pete Souza)

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