to debug and maintain PEPE's processing elements. Burroughs delivered PEPE to the Ballistic Missile Defense Advanced Technology Center (part of US Army's Strategic Defense Command) in Huntsville, Alabama in 1976. Testing was apparently successful, but Bell concluded that the machine was too expensive for the sorts of threats being faced by the Safeguard Program that was being deployed in the 1970s. References Parallel computing Massively parallel computers Missile defense