The University of the Philippines Diliman - Extension Program in Pampanga (UPDEPP; informally, U.P. Pampanga or U.P. Clark) brings the UP standard of education, research, and extension work to the busiest and fastest growing place in Central Luzon, the Clark Freeport Zone in Angeles City, Pampanga. It also assists the Clark Development Corporation (CDC) develop its tourism program and the Clark International Airport Corporation (CIAC) in strengthening its logistics capability. It also has a unit operating in Subic Freeport, called the University of the Philippines Diliman Extension Program in Olongapo (UPDEPO). UP's presence in Pampanga started when an extension program was established in Clark Air Force Base in 1953. Another unit was established in San Fernando, Pampanga in 1979. Then called the UP Extension Program in San Fernando, (UPEPSF), it was formalized in June of that year under a Memorandum of Agreement between UP and the province of Pampanga under Governor Estelito Mendoza. UPDEPP is also known as UP Clark, UP Clarkfield or UP Pampanga. It is one of the extension campuses of the University of the Philippines Diliman.