Around July or August of 1964, I was in Morro Bay for summer vacation ( I was a teenager at this time). At about 9PM, was out on the beach. Saw triangular shaped object, very large, out to the west of the coast, moving from north to south. This object was silent. A smaller object, which resembled an airplane, was "following" the triangular shaped object and was darting back and forth at the rear of the object (I think it was a military aircraft). My father is an aircraft mechanic and FAA inspector. I have grown up around airplanes and have a better than average knowledge of aircraft (both military and civilian) and have never seen anything like this object. A few days after viewing this object, I had the opportunity to speak with the gentlemen who manned the radar station at Cambria/San Simeon. I told him what I saw and asked if he had seen these objects on his radar screen that evening, but he said nothing at all had shown up on his radar screen that night.