Peter Bergen

A recent report on UFOs by America's intelligence community is worth examining following the takedown by the US military of a Chinese spy balloon, and the downing of three unidentified flying objects in North American airspace, writes Peter Bergen.

Napoleon's soldiers used them. So did Union troops in the Civil War. Peter Bergen recalls that his father worked in the US Air Force on a project that sent camera-equipped balloons over the Soviet Union. The balloon that floated over the US was not a national security catastrophe, as some Republicans suggested, but a reminder of the espionage threats facing the country, Bergen says.

Peter Bergen and writer Erik German unpack the US Office of the Director of National Intelligence's latest report about "Unidentified Aerial Phenomena" -- or UFOs.