Drag,
Your comments re Marshalls definately hit bullseye. I first met them in 71 at Colerne, even then they were supporting the engineering task on the K. That followed through on both ALSS, Ground Engineers and AES at Lyneham. They were a good bunch of guys, who got the job done, and fitted nicely with the service element of Albert support. My only theory on why the wingtip pods were "under slung" would be that we were interested in a ground threat, and under slung gave it an unobstructed view of terra firma.
Smudge