What participant in Operation Phantom Linebacker currently has about 17,000 soldiers, 10,000 of whom are stationed in South Korea? 
Operation Phantom Linebacker: Operation Phantom Linebacker was a coalition military operation in Iraq designed to interdict anti-government fighters from entering Iraq from Syria. Operation Phantom Linebacker:  The U.S. 3rd Brigade and the 2nd Infantry Division (United States) conducted the operation with the Iraqi National Guard, Iraqi Border Police, and other Multinational Forces. 2nd Infantry Division (United States): The 2nd Infantry Division ("Indianhead"; "2ID," "2nd ID", or "Second D") is a formation of the United States Army.
i don't know