In 1946 newly elected President Manuel Roxas created a Capital Site Committee to look at other possible sites. The old capitol site was not deemed defensible enough from military attack nor the area large enough to accommodate a projected population of several million people. Sixteen other sites were evaluated. The committee was formed to look at 16 other options to Novaliches. These included, among others: Tagaytay, Cebu, Davao, San Pablo, Baguio, Los Baños, Montalban, Antipolo, and Fort McKinley. The committee even considered moving the capital to Boracay Island but the raised elevation of Novaliches was finally chosen. The original Diliman area was thus enlarged to include the Novaliches watershed to the North all the way to Wack Wack in the south. In essence, the Frost Plan was revived under the National Planning Commission first headed by Croft then later by Harvard-trained Anselmo Alquinto. The plan was revised in 1947, 1949 and finally in 1956.