pulse1 (your #7888),
...Frank remembers having to carry out a compass swing while airborne using known landmarks. The thought of doing that while over enemy territory, and looking for enemy fighters, is yet another fact which fills me with awe at what these guys did...
It would fill me with awe, too ! Think, he's a bit "off the beam" here (Compass swings were generally done on a Compass Swinging Platform on the airfield. (See my p.138 #2744 on this Thread).
Never heard of it being done in the air, but someone will enlighten us, I'm sure !
Danny.
