Former Late Show host and comedian David Letterman entertains at the president’s lectern as, from left, former Daily Show host and comedian Jon Stewart, President Barack Obama, First Lady Michelle Obama, Dr. Jill Biden, and Vice President Joe Biden listen during the comedy show in celebration of the 75th anniversary of the USO and the 5th anniversary of Joining Forces at Joint Base Andrews in Washington, D.C. May 5, 2016. Joining Forces is an initiative to help military, veterans and their families founded by Dr. Jill Biden and First Lady Michelle Obama. (DoD News photo by EJ Hersom)
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