Saw a object the size of a shopping center, went on craft,

While waiting for friends to get out of class, I was sitting in car with friend, noticed . What appeared as head lights in sky, tryed to tell friend, couldn’t speak, pointed, felt for door handle, got out with friend, watched large, shopping center go over, large bay door on bottom, bay door large enough for commercial jet to fit in , heading to naval academy, no sound, I walked towards, and friend ask where I went to c was mad I left , butt I don’t remember getting on craft , after all was settled, next day asked friend what he saw, he said he saw a flying shopping center and not to report, because people would think we were crazy, this happened in April on 1980, this is the first time I spoke of it, in forty years, , I felt it had to be are craft, it was about ten miles from naval academy