Two US bombers return to UK RAF base after 15-hour mission, BBC reports

Two US B-52 strategic bombers that flew out of RAF Fairford in Gloucestershire, England, on Thursday returned to the base after 15 hours. 

A weapons analyst told BBC News that he counted 12 cruise missiles under the wings of each aircraft when they departed, but no weapons remained when it returned.

It is unclear where these weapons were used and what they were targeting.