WASHINGTON, DC - JUNE 17: A U.S. Secret Service agent keep watch as President Barack Obama and the first family lift off from the South Lawn in Marine One and leave the White House June 17, 2016 in Washington, DC. The first family is traveling to New Mexico and tour Carlsbad Caverns National Park to celebrate the 100th anniversary of the creation of America's national park system. (Photo by Chip Somodevilla/Getty Images)