U.S. Customs and Border Protection officer Alan Syto gestures to a truck driver making a delivery to Levi's Stadium as a line of vehicles are is x-rayed by a non-intrusive inspection truck in advance of Super Bowl 50 in Santa Clara, Calif., Feb. 1, 2016.
(U.S. Customs and Border Protection Photo by Glenn Fawcett). Original public domain image from Flickr