Program Evaluation and Review Technique (PERT)

The PERT system was developed for the Polaris Missile Program in the 1950s. At that time there was a lot of pressure on the United States Navy to complete the Polaris Missile Program. The Cold War was raging, and the United States needed a deterrent that would discourage the threat of nuclear war with Russia. A mobile missile that could be carried aboard a submarine and launched from beneath the surface of the sea would be a formidable weapon.

The problem for the U.S. Navy was that there were two separate projects to be done. One was to develop a submarine that could launch these missiles. The second project was to develop a missile that could be launched from a submarine. The durations of the project ...

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