Home First Lady Michelle exits the Presidential limousine to board the Air Force One to leave form Tegel Airport in Berlin, Germany, 19 June 2013 after their visit to the capital. Photo: Michael Kappeler dpa +++(c) dpa – Bildfunk+++ | usage worldwide (Photo by Michael Kappeler/picture alliance via Getty Images) First Lady Michelle exits the Presidential limousine to board the Air Force One to leave form Tegel Airport in Berlin, Germany, 19 June 2013 after their visit to the capital. Photo: Michael Kappeler dpa +++(c) dpa - Bildfunk+++ | usage worldwide (Photo by Michael Kappeler/picture alliance via Getty Images)

First Lady Michelle exits the Presidential limousine to board the Air Force One to leave form Tegel Airport in Berlin, Germany, 19 June 2013 after their visit to the capital. Photo: Michael Kappeler dpa +++(c) dpa – Bildfunk+++ | usage worldwide (Photo by Michael Kappeler/picture alliance via Getty Images)

First Lady Michelle exits the Presidential limousine to board the Air Force One to leave form Tegel Airport in Berlin, Germany, 19 June 2013 after their visit to the capital. Photo: Michael Kappeler dpa +++(c) dpa – Bildfunk+++ | usage worldwide (Photo by Michael Kappeler/picture alliance via Getty Images)

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Secret Service agent watches as First lady Michelle Obama speaks about the government and community efforts to fight childhood obesity while visiting the YMCA January 28, 2010 in Alexandria, Virginia. (Photo by Chip Somodevilla/Getty Images)