Bright green flashing light in the sky hovering in a weird shaped craft. Incredible speed as the craft zoomed away.

The craft was hovering above the house down the street from mine. It was pulsing Green lights that were flashing. It was hovering for a few solid minutes when all of the sudden it took off at extreme speed. I am an aircraft enthusiast and this is nothing live I have every seen before. The speed was incredible and how the craft was able to shoot straight up still amazes me. I have photos and a short video. It is not super clear but was the best I could do before the craft took off.