US President <a gi-track='captionPersonalityLinkClicked' href=/galleries/search?phrase=Bill+Clinton&family=editorial&specificpeople=67203 ng-click='$event.stopPropagation()'>Bill Clinton</a> smiles and gives the 'Thumbs Up' sign while boarding Air Force One 0 February at Andrews Air Force Base near the nation's capital en route to Los Alamos, New Mexico. Clinton stepped up his drive to ban nuclear testing worldwide, showcasing a simulated blast at the Los Alamos National Laboratory, where the first nuclear bombs were created during World War II.