Supporters of Boeing are protesting after the U.S. Air Force gave a multi-billion dollar contract to a european company.

The Air Force was looking for a company that could replace its aging air-to-air refueling tankers.

U.S.-based Boeing supplied those tankers to the AirGforce for nearly fifty years, but they say Northrop Grumman offered a bigger tanker.

Many Boeing employees are outraged by the decision, and so are some lawmakers.

They say the Air Force is out-sourcing American jobs.

Boeing is formally protesting the contract.

Now, the government accountability office has 100 days to review the deal.