I think it was on this list that I recently asked a question regarding inertial navigation and I got a response from someone who said that they had worked with inertial navigation on the F4 Phantom. Well, if that person (or others with such experience) could email me, I'd like to hear some of your stories :-) I am kinda interested in the F4, I'm not sure why, I guess it is because it was the first truely modern fighter and it has a weird profile . Thanks, Sean | | Sean Breheny | Amateur Radio Callsign: KA3YXM | Electrical Engineering Student \--------------=---------------- Save lives, please look at http://www.all.org Personal page: http://www.people.cornell.edu/pages/shb7 mailto:shb7@cornell.edu ICQ #: 3329174