All the expensive F-22 Raptor fighter jets left behind at Florida’s Tyndall Air Force Base ahead of Hurricane Michael will likely fly again, an Air Force official said Monday.

The 17 jets stored in base hangars during the storm suffered what appear to be only superficial damage that is repairable. But the service must complete an assessment before being sure, according to the official, who spoke on condition of anonymity.

The fifth-generation F-22s, which are no longer in production, are estimated by the Air Force to have cost $143 million per unit, but that price could be as high as $350 million when the costs for the entire program including research and development are factored in.

Tyndall is home to a fighter wing that specializes in the F-22 and the base suffered catastrophic damage when the Category 4 hurricane raked the Florida panhandle last week.

Air Force leaders visited Tyndall over the weekend to assess the damage and said the hangars and aircraft sheltered during the storm due to maintenance or logistics issues looked “better than expected” amid the surrounding damage.

“Our maintenance professionals will do a detailed assessment of the F-22 Raptors and other aircraft before we can say with certainty that damaged aircraft can be repaired and sent back into the skies,” Air Force Secretary Heather Wilson and Gen. David Goldfein, the Air Force chief of staff, and Air Force Chief Master Sergeant Kaleth Wright said in a statement Sunday. “However, damage was less than we feared and preliminary indications are promising.”