Homeland Security Investigations performs an undercover drug sting; the U.S. Customs and Border Protection finds cocaine in the Rio Grande Valley.

Homeland Security Investigations find cocaine in a Colombian sailboat; a Customs and Border Protection rookie K9 finds drugs going overseas.

Coast Guard and Homeland Security Investigations track suspected human smugglers; Customs and Border Protection finds over 200 kilograms of cocaine.

American Maritime Officers pursue a boat fleeing to foreign waters; Customs and Border Protection busts a drug-smuggling family.

United States Coast Guard stops over 13,000 kilograms of cocaine and works with Homeland Security Investigations to detain smugglers.

HSI St. Louis pursues gun traffickers; CBP stops siblings hiding money.

Border Patrol finds a smuggling tunnel; Customs and Border Protection seizes silver bars and cocaine.

Air and Marine Operations chases a boat tossing cocaine overboard; Customs and Border Protection seizes pills from a pilot.

Homeland Security Investigations seizes cocaine found ashore; Customs and Border Protection finds over 120 kilos of meth and stolen cars.

President Kennedy is brutally shot in broad daylight while visiting downtown Dallas, TX, and a secret service agent narrowly misses the fatal bullet.

The race is on to track down the man who shot JFK, but before he is arrested, the assassin kills again, and this time, a policeman is shot.

The assassin Lee Harvey Oswald is charged with JFK's murder, but the world is shocked again when Oswald himself is shot dead while in police custody.

On April 19, 1995, a bomb explodes outside a federal building and the first responders race to save those trapped inside, and the media searches for answers.

Reports of a second explosive cause panic then an evacuation is ordered and the FBI launches a nationwide search to find those responsible for the attack.

As families grieve for those they've lost, the trial begins and the government seeks the death penalty for the worst domestic terrorist attack in U.S. history.