Hazardous Duty - Stopping Truck Bombers at Embassies A Quick History of Crash-Rated Barriers and the State Department Greg Hamm July 22, 2014 In 1998, at the U.S. Embassy in Dar Es Salaam, Tanzania, a crash-rated, moveable barricade prevented the attacker’s vehicle from entering the rear compound of the building and, thus, reduced the loss of lives and damage to the facility. Read More