You really come up with some out-there threads Jane. Many of them begin with 'just wondering' or 'just curious' and then ask some very specific questions (or conspiracy theories). I find it hard to believe that anyone could be 'just curious' about the L/D of the F104C at Mach 2, high altitude with underwing and tip tanks etc etc. So what's the deal: are you doing an aero eng degree, do you have aeronautical OCD, are you a message board robot, are you reverse engineering elderly US jets for North Korea? I'm just curious.