Not sure if you accept unusual black helicopter reports, but this was a unique incident. on the way from my home to pick up my son from school, i noticed what appeared to be a helicopter to the right of my direction. it was flying far lower than any helicopter i have ever seen roughly 500t. nearly dangerously low. it was completely silent, but more arresting than that, was it's color. it was the absolute blackest black i have ever seen. so much so that not so much as the sun reflect light of it. 100% uniformly black, including all windows. it traveled precisely in a straight line, without any deviation or elevation changes. i cannot recall if i actually saw blades moving. i had my cellular phone with me, but was in such shock and wonderment i simply called two friends to describe what i was witnessing. i did so much as think to take a picture or video. there was certain degree of the "oz effect" whereby nearly if not all ambient noise was nonexistent. my inclination is to this that it was some form of top secret military helicopter, but the above details made me question if my suspicions were correct.