U.S. Coast Guard crews searched Tuesday for a National Guard pilot after his F-15 jet fighter crashed into the Pacific Ocean off the Oregon coast. The single-seat aircraft, which was from the 142nd Fighter Wing of the Oregon National Guard, went down about 1:35 p.m. about 35 nautical miles west of Cannon Beach while on a training mission, Salem-News.com reported. The jet was based at the Portland Air Base. The fate of the pilot was not known and the cause of the accident was under investigation.