She is now one of only a few women in the Air Force qualified to fly bombers such as the B-52 and the swing-wing B-1.

CNN: But spokesman says resignation is option

The B-1B has a "variable-geometry" or swing-wing design: The wings are swept forwards, almost at right angles to the body, for take-off and landing and cruising.

BBC: Profile: B-1 bomber

The "AS-wing" (as opposed to A-Swing, we guess) steals some elements of Samsung's X830 with a spring-loaded swivel and a rather narrow design.

ENGADGET: Pantech's oddball concept lineup Mobile

Tensions increased after the interval, ignited by a late Tom Arscott tackle on Wasps wing Josh Lewsey and fuelled by Birkett's swing at Salter.

BBC: Bristol 23-23 Wasps