Hovered and moved

The craft had a bright white light I thought it was a star when I looked out the window of my door but noticed it was way to close it did not make a sound but as it flew over my house it made a turn to go parallel to my home as it passed over my property and flashing lights on both side flying very low to the ground close enough to make out the bottom of it where there where less bright lights around the object. As I said it did not make a sound if it was a plan you would here the engines that low to the ground or a helicopter would have been loud but it could have been a stealth helicopter military grade but why would they be observing me. They hovered for 2 minutes just above the tree tops looking straight at me and when I went to the window it took off in about a minute and a half flew straight at me turning to avoid my home.