French train attack hero Spencer Stone was in a stablecondition after being stabbed in Sacramento on Wednesday night.
Airman First Class Stone, one of three Americans who helped thwart a terror attack on a French train in August, had been "repeatedly stabbed."
The Air Force said the incident occurred around midnight.
"He is alive and in stable condition at this time," the Air Force said in a statement. "We do not have any information as to the events preceding the incident."
Stone, 25, tackled Morocco-born Ayooub El-Khazaani after the heavily armed terror suspect opened fire on a Paris train in August.
Stone was stabbed with a box cutter during the bloody struggle with El-Khazaani, and needed surgery to reattach part of his hand.
This attack on Spencer Stone now adds even more credence to the fact that the shooting at Umpqua College in Roseburg Community College was a terror attack. Alek Skarlotos the other American hero that stopped the train attack was to have been at the college if not for the fact he was on ABC Televisions Dancing With The Stars.