I was in bed reading around 11.30pm when i heard a large boom from the rear garden below my bedroom. the noise sounded like a supersonic boom but not as loud. i opened the curtains and saw at a distance of around 30 feet 2 distinct white globes hovering directly over a 6ft high ranch fence approx 6 inches above the fence side by side about 2 feet apart. i felt like the objects were examining the fence and after around 10 seconds the objects took off diagonally without a sound over our house at enormous speed without any noticeable acceleration. i checked the fence the day after and noted that the painted white fence had brown marks in the area where the objects had been similar to what would happen if a blowtorch had been played over the paint. i did not report the matter due to fear of ridicule given my previous experience.