US President Barack Obama and retired US Army Lt. Colonel Charles Kettles(L) listen as the citation is read during a presents the Medal of Honor ceremony in the East Room of the White House on July 18, 2016 in Washington, DC. Lt. Colonel Kettles was awarded the Medal of Honor for conspicuous gallantry while serving in Vietnam. / AFP PHOTO / MANDEL NGANMANDEL NGAN/AFP/Getty Images