If you look closely at the fishing boat in the opening scene, you will see an uncredited Michael Bellisario as the son of the fisherman. They both appear again later in the Pilot.
According to the DVD commentary track, the picture of "Mom, Dad and Little Sister" is actually Don Bellisario's daughter, son-in-law and grand-daughter.
Pilot episode was partially filmed on the USS Lexington which is now a floating museum in Corpus Christi, TX.
As the F14 dog fight footage is taken from Top Gun, the called Russian Mig 21 Fishbeds are in reality US made F5 Tigers.