In a stunning turn of events, the director of the Secret Service, Kimberly Cheadle, has resigned amidst a severe security breakdown. Just ten days ago, a gunman managed to infiltrate a supposedly secure perimeter, nearly assassinating a former president. Despite the extensive security presence, the agency's shortcomings were laid bare for all to see. Cheadle, however, steadfastly rejected bipartisan calls for her resignation until Monday.