Keep guessing, gents. It goes at least one full circumference (well, save that it does not connect end-to-end), and that'd make for a really strange "G". I figger that it might be for the manufacturer of the engine, but I don't think GE has that much of a lock on the market that so few RR and PW and whatever else there is -- show up where we've flown. Maybe I'll have to go searching. Let me finish this sandwich, though -- then I'll look.