U.S. bombers head back to America as security concerns grow at U.K. air base

The Defense Department is pulling its B-1B bombers out of Britain and returning them to the United States, following a security concern at RAF Fairford that has raised new questions about the safety of American military operations in Europe.

The decision comes after British authorities arrested suspects near the U.S.-used air base over an alleged plot targeting the facility. 

President Donald Trump has described the suspected threat as serious, while British and American authorities continue investigating the incident.