Umm, the latest version of the F-15 is based on the E model, which is a two seater and can perform both air-to-air and air-to-ground missions. USAF only wants to do air-to-air with theirs and so the second crewman is not needed. But taking the second seat out would add cost. So they're doing the smart thing and putting one pilot in a two seat airplane. And about that "old" technology patched together with "band aids"? It's at least as good as and in many ways better than any other non-stealth tactical jet out there. And for the specific intended role (long range missileer) it's significantly better than either stealth fighter. And about it being "expensive"? Not only is it cheaper to buy, but much more importantly it's way cheaper to operate than either stealth fighter. As for Boeing "needing" the business? Boeing is doing VERY well thank you selling airliners, Super Hornets, military trainer jets, aerial tankers, AWACS aircraft, Maritime patrol aircraft, a big drone, heavy lift helos, the world's premier attack helicopter (incidentally the same vintage as the F-15), JDAMS, missiles and other ordnance, satellites, etc, etc. And that does not even include their global aerospace support business which is also going gang busters. So no, this is in no way some kind of "bail out" of Boeing as you attempted to imply.