Looked like a sail boat type shape with red lights, very big

Humming sound woke me up and I laid there and tried to figure out what it was. I got up and looked out the window and put my face against the window to see if it was vibrating and when I looked back up to the sky, I saw this object that was kind of rectangle-shaped but oddly it looked like a sailboat with red lights around it. It was a pretty big object. By the way, even as far away as it was, when it disappeared from my site a few seconds later, the humming stopped. I was so shocked for a few seconds I couldn't move and I didn't have enough time to grab my camera off my nightstand to take a picture. I couldn't go back to sleep the rest of the night and felt like I needed to tell somebody about this. I did check the flight radar app on my phone to see if any airplanes or helicopters were in the vicinity of our home and there was none... maybe a small training plane from the naval air station but nothing that was near the size of what I saw. I would like to know what it was, if you could tell me.