bright light doing manuvers then chased by jets

Sorry about all the unknowns but it was a long time ago. I was with my Cub Scout troop in our back yard when we all noticed a bright light in the sky. It was going very slow. It then began a loop manuver going at the same speed, much to slow for a conventional air craft to accomplish. We watched as 3-4 jets came in from the right as it came out of the loop. As the loop was finished and the jets got closer it took off vertically at a high speed. As I said it was a long time ago and I don't recall specifics like direction or time of year. As I talk to the rest of my family and get better info I'll add it.
Date is approximate.  PD