outlines and casual methods and apparatuses. Around then, two numerical task booking models were created. The "basic way strategy" (CPM) was created as a joint endeavor between DuPont Corporation and Remington Rand Corporation for overseeing plant support projects. The "program assessment and survey procedure" (PERT), was created by the U.S. Naval force Special Projects Office related to the Lockheed Corporation and Booz Allen Hamilton as a component of the Polaris rocket submarine program.[14]