The following exert is an eye witness statement. Please read into it what you will. This has been reported to mufon who I am sure are investigating:
It was friday of memorial day weekend in 2012 or 2013, i think 2012, and my wife and i went to the tv lounge in detroit. while outside with a group of people, all of a sudden, coming very fast, from the west, then over us, then moving across the detroit river into windsor, was an incredibly large object. it was rectangular, black, as wide as 2-3 football fields. it moved at a terrific speed. there were some low clouds the night, and the object looked close, went over the low clouds. it looked like a shadow in the sky. it was moving very fast; then instantly disappeared. then 15-20 minutes later, there appeared three white lights in a triangle, moving in every direction, then there were 5, then 10, until there were at least 50. what i saw was an incredibly-sized ship silently going over me with about 50 smaller objects appearing shortly after, doing what appeared to be aerobatics. not sure how this makes me feel. part of me was pretty excited and another part of me concerned.