I am trying to do some research on the structural differences between an f-15 for the Navy and the Air Force. I am a flight student at Elizabeth City State University; doing a presentation on this. The basic information I have so far is that an f-15 for the Navy has to be lighter and stronger than one for the Air Force due to the hard landings on a carrier. If anyone can give just a little bit of insight into this, it would greatly help....the Boeing website and archives do not really help nor give more than basic specifications.