On a day like this 30 years ago, a suicide bomber in a hijacked truck managed to bypass the barriers around the barracks and smashed right into the lobby of the main building before detonating his explosives.
The explosion was so big that it collapsed the building into rubble and killed 305 servicemen.
The video above is a short documentary told by two marine veterans who were serving in Beirut at that time, with footage and photos of the bombing.
