Parades in Metro Manila are held principally in the parade grounds of Camp Aguinaldo in Quezon City and Quirino Grandstand in Manila with the Philippine Army headquarters in Taguig City and Villamor Air Base in Pasay as secondary venues. Parades are also held in the grounds of Clark Air Base in Pampanga. Regionally, the "Bicol Region Military Parade" held every second Friday of September in Naga City, Camarines Sur, with over 19,000 youth cadets and athletes from high schools and universities, together with the Armed Forces, National Police and the Bureau of Fire Protection, all taking part, is the country's biggest parade held in honor of the festivties of Our Lady of Peñafrancia, and is also the longest and with such big numbers of people marching this civil-military parade is one of the largest ever to be annually held in Southeast Asia. Parades are also held in major cities in the regions during national and regional holidays.