Maj. Sandra Stoquert of the Air National Guard's Syracuse-based 174th Attack Wing says a significant amount of debris was found along the eastern shore on Friday. She says there's no estimate yet of the percentage of the aircraft wreckage found so far.
The drone took off from Fort Drum in northern New York and crashed into the lake Tuesday about 12 miles from the eastern shore and 20 miles northeast of Oswego.
The U.S. Air Force is convening two investigation boards to determine the cause of the accident.
The company that makes the Reaper says the cost of a new drone starts at $10 million.