It moved like no other flying planes I've ever seen with quick and sharp movements, had not sound.

It happened some year’s ago estimated time was 1982. I had return to Detroit, MI from living in TX for 6 months.
Me and my sister were standing at a bus stop on Jefferson street near a park that sit’s in the middle of the Detroit river called Bel Island.  When a craft appeared to come from over near or from the river moving in a quick type of motion towards us we both were looking in the direction of it and stop our conversation and just were speechless. We both looked as if how is it that all of this traffic is moving and no one else seems to see this but us?  It moved so quickly we were lost for words until it left. It actually hovered over us as to observe. There was no sound. It had to be the length of a small home. It only stayed over us maybe 5 to 10 min and than left with the same sharp motion going straight than upwards so very fast. Well we than said very little until later we spoke on it. Here it is year’s later and I still think about it today.  There is no way that we are the only life, I know for myself and so does my sister. I would take any test given.
Witness indicates that the date of the sighting is approximate.  PD