You Know Who You Are--you people who put this idea into my head. For everyone else the only excuse is that I was being enthusiatic about planes in IRC and the subject of Gunmen and Spitfires came up.
I couldn't resist. Gunmen in RAF blue... Mmmmm...
RAF Pembrey is real, the squadrons stationed there during the timeframe of this story are real. Sergeant Jeffreys and the incident with the Focke-Wulfe is real, improbable as it sounds. Everyone and everything else, including all subsequent events are made up. The Gunmen, Yves and Jimmy all belong to Chris Carter and the Powers That Be, even though I've stolen them and dumped them in World War Two Britain.
Enjoy.