I'm a little late, but I have been a big Pearl Harbor and Philippine buff for a long time. Pearl Harbor day is always remember, but the valiant fight put up by Philippine and American forces in the Islands of the Philippines must also be remembered. Im just giving a quick brief history. Read "Doomed At the Start" for a complete air combat history.
When word got out about the attack on Pearl Harbor the FEAF command launched every available aircraft airborne. The 24th Pursuit Group comprised of P-40B's, P-40E's, P-35A's, NA A-27's and various models of the P-26 Peashooter(most of the P-26's had been turned over to the PAAC squadrons, But more then a few P-26's were kept by USAAC squadrons for various hack duties). The 24thPG comprised the 3rd, 17th, 20th, 21st, and 34th Pursuit Squadrons. Fog and bad weather delayed the Japanese on Formosa from making an attack. This would have been a good time for B-18 and B-17 aircraft to attack the Japanese island, and a plan was being made to do just that. As most aircraft landed to fuel and collect what was going on, the Japanese were on their way to attack the American air bases. The 20th PS was equipped the the P-40B and many were about to take off from Clark Field when bombers started to drop their bombs. Many P-40 pilots began to take off during the bomb drop. Several pilots were killed when bombs erupted near their aircraft. One pilot, Lt. Max Louk, was trapped inside his cockpit, unable to open his jammed canopy, after his P-40B was hit with a bomb and burned to death.

Three P-40B pilots were able to get airborne and engage the Japanese. Lt. Joe Moore shot down one aircraft and Lt. Gilmore shot down two.
Elements of the 3rd and 21st PS where about to land at Iba Field when the field was attacked. Several P-40E's engaged the Japanese. Iba field was a total loss after the attack.
The 17th PS with 17 P-40E's led by Lt. Boyd Buzz Wagner was patrolling the Manila area but never noticed the action below them!
The P-40E's were not very effective because tech orders said to disarm the reloading handles on all the P-40E's. So if in flight the guns jammed the pilot would have to land and manually recharge the guns. The Guns where also newly installed and many did not have the cosmoline removed after shipment.

The P-35's also managed to destroy several Japanese aircraft and also strafed Japanese troop ships. PAAC P-26' engaged Japanese fighters. Destroying several.
That said, the 24th did put up a good fight and did bloody the nose of the Japanese. But lack of supplies and an ever advancing enemy put the nail in the coffin.
Never forgot the men of the 24th PG and all those in the FEAF aka "Far East Air Force"!!!!!! These men are heroes.
Lt. Gies, Lt. Crellin, Lt Louk, unknown at Clark:

Lt. Joe Moore:

Lt. Max Louk,

P-40B's at Clark Field:

Lt. White 20th PS: