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.