Military RAF Mildenhall refueled B-1B over the North Sea Last updated: May 9, 2020, 09:58 UTC Published: Saturday, May 9, 2020, at 09:39 UTC Category: Military Author: AIRLIVE contibutors RAF Mildenhall refueled B-1B Lancers from Ellsworth AFB, South Dakota over the North Sea. With the fuel the B-1Bs ended up flying all the way to Eastern Europe to train with NATO allies and partner nations.