Kissinger, who served as secretary of state under Presidents Richard Nixon and Gerald Ford, was spotted being taken from the regular security line to the pat-down line by Transportation Security Administration agents, The Washington Post reported Wednesday.
"He stood with his suit jacket off, and he was wearing suspenders. They gave him the full pat-down. None of the agents seemed to know who he was," witness Matthew Cole said.
Cole said Kissinger, who will turn 89 this month, was in a wheelchair due to the long walk involved in security screening.