I was in my bedroom, about 11:00. outside i heard a hum, since we live next to an international airport about 60 miles away, i was pretty used to it. but this was getting closer and closer like it was right over my house. so i go outside on my back porch facing north, i go outside and i see what almost looks like a big bird, but then i see a helicopter. so as i focus my eyes i see what looks like a black dome like craft being chased by a black helicopter. ( or maybe craft guiding the helicopter) this craft made noticeable directional changes, and traveling what seemed like 200 mph in the sky. i lost sight of the object as it disappeared over the horizen. i need to be sleeping, i just hope the mib don’t come to my house and ask me questions.