Pentagon preparing to move F-35 work out of Turkey

US Acting Defense Secretary Patrick Shanahan warned Friday that the Pentagon will halt manufacturing support for the F-35 in Turkey if Ankara buys a Russian missile defense system.Shanahan told journalists the government remained steadfast in its opposition to Turkey's adoption of the S-400 anti-aircraft technology."If Turkey decides that the S-400 is a decision they want to go forward with, then we have to move work out of Turkey," he said.