Visitors to the Smithsonian's National Air and Space Museum wait for it to reopen after widespread power outages caused many of the buildings along the National Mall in Washington to shut down temporarily on Tuesday. Andrew Harnik/AP hide caption

itoggle caption Andrew Harnik/AP

Joseph Clancy has been named the permanent director of the U.S. Secret Service. Clancy, who has been the agency's acting director since last October, is seen here testifying on Capitol Hill last November. Drew Angerer/Getty Images hide caption

itoggle caption Drew Angerer/Getty Images

The Secret Service released this photo of a "quad copter" that crashed on the White House grounds Monday. The agency says the copter's operator reported crashing it this morning. Secret Service hide caption

itoggle caption Secret Service

The Secret Service released this photo of a "quad copter" that crashed on the White House grounds Monday. The agency says the copter's operator reported crashing it this morning. Secret Service hide caption

itoggle caption Secret Service

A review panel says changes are needed at the Secret Service — along with a better fence at the White House. Here, members of the Secret Service Uniformed Division stand in front of the White House. Kevin Dietsch/UPI /Landov hide caption

itoggle caption Kevin Dietsch/UPI /Landov

An intruder managed to jump the north fence of the White House on Sept. 19 and escape capture until he was inside the mansion. A review of the incident cites communication and training failures. Carolyn Kaster/AP hide caption

itoggle caption Carolyn Kaster/AP