Yeah TA is on the money here, the fighters that were there were obosolete the Japanese bombers could fly higher than the US fighters so the airfields would ahve been easy pry to them. The B-17s that were there would have not contributed much other then to destroy some of the anchored landing ships, the problem with sending help to Luzon was that there was no help to send. Even if sacrifices were made to free up men, there was no way to supply them at the time.

The conquest could have been delayed by the planes there but not prevented.

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The Muslim Brotherhood “must understand that their work in America is a kind of grand Jihad in eliminating and destroying the Western civilization from within and ‘sabotaging’ its miserable house by their hands..." — Mohamed Akram. http://jihadwatch.org/