Ground teams resumed searching Thursday for a pilot who went missing after an F-15 fighter jet crashed in a remote, heavily wooded area of western Virginia, according to a Virginia State Police spokeswoman.
The ground search had been suspended the night before at midnight, spokeswoman Corinne Geller said.
Search teams have been looking for the missing pilot since shortly after the jet crashed around 9 a.m. Wednesday. More than 100 local, state, and federal officials as well as volunteers took part in the effort.
The search efforts are centered around the southeast side of Mount Crawford, Virginia, near the Washington National Forest.
The experienced pilot of the single-seat jet was headed to New Orleans for radar installation as part of routine maintenance and reported an inflight emergency, then lost radio contact, authorities said. The pilot and jet are with the 104th Fighter Wing of the Massachusetts Air National Guard, officials there said. The Massachusetts Air National Guard issued a statement Thursday morning saying the search was expanding with additional Air Force resources.
The guard said specially equipped HC-130 aircraft assigned to Moody Air Force Base in Georgia began searching at 3 a.m. Thursday.
Officials haven't yet said what caused the crash or whether the pilot ejected. The crash caused a deep crater and a large debris field in a heavily wooded but level area, officials said.
Col. James Keefe said at a news conference Wednesday in Westfield, Massachusetts, home of the fighter wing, that there were no munitions onboard the jet at the time of the crash.
Keefe said the plane was flying about 30,000 to 40,000 feet - "pretty high" - when the pilot reported the emergency. Pilots are trained to release equipment when ejecting, Keefe said, so it was likely the pilot did not have a radio.
F-15s are maneuverable tactical fighters that can reach speeds up to 1,875 mph, according to the Air Force website. The F-15C Eagle entered the Air Force inventory in 1979 and costs nearly $30 million, the website says. The Air Force has nearly 250 F-15s.
Several F-15s have crashed over the past few years in various states. In at least one, the pilot ejected safely. Causes included failure of a support structure for the jet and pilot error.