Terrorism Close Calls

2. The Student Bomb Maker

A suspicious online purchase helps start the FBI's investigation into a chemical engineering student's quest to inflict horrendous damage on America.

3. Cargo Bomb Plot

A number of international intelligence agencies work together to thwart a terrorist scheme to blow up American cargo planes in flight.

4. Operation Chevrolet: The Plot to Kill Saudi Ambassador

A car salesman plans to assassinate the Saudi Ambassador to the U.S. with some help from a Mexican cartel member -- who happens to be a DEA source.

5. Operation Overt: The Transatlantic Liquid Bomb Plot

Suicide bombers plan to use explosive liquids disguised in sports drinks to blow up at least seven separate planes bound for North America.

6. Martin Luther King Day Plot

A man with ties to white supremacists goes on the run after his plan to bomb a Martin Luther King Day march is foiled by the FBI.

7. The Sauerland Cell: Plot to Kill U.S. Soldiers

Four terrorists plan a two-pronged attack in Germany: detonate bombs in popular nightclubs, followed by larger bombs in the streets once people flee.

8. The Israel Honey Trap

A young mother's suicide attack at an Israeli checkpoint ignites interest in her motivations as well as her baffling backstory.

9. Australian Anzac Day Plot

The arrest of a 14-year-old boy in England sparks a frantic investigation into a terror plot halfway around the world in Australia.

10. German Jihad & The EURO Plot

A horrific terrorist plot -- suicide bombers and shooters working in tandem -- is foiled when a suspect makes an unexpected move.