Secret Service officers walk along the lawn on the north side of the White House, where an intruder scaled the fence Friday night. (Susan Walsh / Associated Press)
An explosive technician in a bomb suit searches a vehicle near the entrance to White House. (Pablo Martinez Monsivais / Associated Press)
Tourist stop to take photographs in front of the White House. (Pablo Martinez Monsivais / Associated Press)
A Secret Service agent gives directions during a White House evacuation prompted by an unarmed man who was able to enter after jumping the fence. (Evan Vucci / Associated Press )
