This thing was seen hovering over a neighbor's house late one nite by my husband and it vanished in the blink of an eye

This is seen at nite and is rectangular with a huge white flashing light at each side. It vanished before you can blink. We also saw this on another nite approx 3weeks prior to the 6th of June 2023. The first time we saw it, it was hovering over a neighbor's house and the house was dwarfed in comparison. No sound just lights then gone . We saw it again tonight on June 6th approx 1030 pm while at our county fair when I was attempting to make a video of a ride. It was moving away very slowly and we just stood and watched the lights flashed slow and simultaneously. I tried to make a pic but it didn't show well on my phone .