My Mom and I were sitting on her back screened in porch. I looked directly across from us and saw a large bright red object through the trees. I got up and walked approximately 10 feet to get a better view and the object looked as large as the house below it and looked so bright red that it appeared like a ball of fire. The sphere shaped object was hovering around the tree tops right behind power lines. Within seconds, it backed up slowly and then took off backwards very fast and instantly disappeared. I have never seen any type of object before in my 45 years on this Earth and up to this sighting, not sure if I really believed in other people's sighting. The night before this happened, we were all going to sleep, and the whole house started swaying back and forth. It feeler like tremors. The house is built off the ground on stilts because it is next to water and is a flood zone. It moved enough that it shook our beds. This went on in intervals of about 3 minutes, repeating over and over for approximately 20 minutes. Four days after the sighting, my sister said she heard what sounded like a roaring sound. She heard birds chirping uncontrollably and she went outside and the floor of the screen porch felt like it was vibrating. She never saw anything, but she wouldn't leave the porch area. This lasted approximately 20 minutes. However, the birds continued to chirp for hours. This happened approximately 11:30pm.