Black diamond with green lights lands on porch roof

I was sleeping in my room and heard a noise like thunder. I looked out my window and saw an orange fireball gliding over the house.  I went into the kitchen and told my sister to come to the window and watch what I thought was a meteor falling into the back yard.  I pulled open the kitchen curtains and saw a black diamond with green lights on the points settle onto the back porch roof-- but the green lights didn't light up any of the diamond. (It was small, only about ten feet across and about eight feet high.)  A low hum was shaking the house and rattling the back window.  The thing sat on the roof for a few minutes,and I wanted to go outside but I heard someone in my head saying, "Don't go outside, you'll get hurt."  Finally the thing slid horizontally off the porch and hovered in the back yard.  The green lights went off and it was just a black diamond, but it was blacker than the sky. It took off and seemed to be flying fast and slow at the same time.  After it had gone over the hill, four jets from the military base chased it, but couldn't catch it.  I don't remember going back to bed, but a few hours later I woke up, tucked into bed, wearing slippers that I hadn't been wearing earlier, and my hands were crossed over my chest.  It took 5 years for me to remember this event, but I had false memories of having told people about it.  When my parents came home that night, they found my sister in front of the TV, shaking.  They thought she'd just seen a scary movie.  She doesn't remember seeing anything that night.
Date is approximate.  PD