VETERAN NAVY FLIERSTwo U.S. Navy A4 Skyhawk fighter planes collided while making an approach to the El Toro Marine Corps Air Station Thursday night, but both jet pilots ejected safely — one after he stayed with his aircraft long enough to fly clear of congestedcoastal areas.The first plane crashed at 7:16 p m. in rugged country aboutthree miles south of Leisure World and roughly two miles west of the San Diego Freeway.Cmdr. Robert R. King Jr., pilot of the second jet, ejected an hour later over Camp Pendleton at an altitude of about 10,000 feet and landed in a football field adjacent to the former 1st Marine Division headquarters building.King suffered minor injuries, officials at Camp Pendleton reported late Thursday night. He was treated at the Naval Hospital for cuts, bruises and a dislocated right shoulder which resulted when he was compelled to drop free of his chute to avoid colliding with a goal post.The Marines said the jets were engaged in routine groundcontrol approach practice maneuvers when they collided.The first plane to crash was piloted by Lt. Cmdr. Stewart Blair, a Viet Nam war veteran, it was reported officially. He was picked up by a helicopter and taken to the El Toro Station hospital.A precautionary medical checkup revealed he was inr