Roy Wenzl

When a truck bomb detonated outside a federal building in Oklahoma City on April 19, 1995, it was the biggest terror attack in U.S. history—and launched the F.B.I.'s largest-ever manhunt.

It prompted a U.S. Air Force UFO inquiry, part of an initiative called Project Blue Book.

Some scapegoated the gods, or their enemies. Others blamed planetary alignments. For many, though, it was just 'bad air.'

In one episode, Klingons were stand-ins for the Soviets.

The Allied invasion of June 6, 1944 was one of the biggest and most significant military campaigns in history.