Alex Brandon, The Associated Press
A robot is seen near a person in a pickup truck parked on the sidewalk in front of the Library of Congress’ Thomas Jefferson Building, as seen from a window of the U.S. Capitol, Thursday, Aug. 19, 2021, in Washington. A man sitting in the pickup truck outside the Library of Congress has told police that he has a bomb, and that’s led to a massive law enforcement response to determine whether it’s an operable explosive device.