Air Force tankers are standing by to provide fuel for Saudi Arabian pilots as they combat extremists in Yemen, but the U.S. won’t foot the bill.

The Saudi government requested U.S. tanker support for their fighter pilots, and the U.S. agreed as long as the Saudis reimburse the gas bill, Pentagon spokesman Army Col. Steve Warren said Tuesday. The tankers are standing by, but have not launched for a refueling sortie yet.

“The aerial refueling in this operation to support the Saudis and other members of the coalition has been agreed with on a reimbursable basis,” Warren said. “We are standing by, but no refueling yet. They requested the capability to be made available.” […]