Need everyone’s help on an aircraft me and my son seen land at a military base.

So I was sitting in my car with my son getting ready to pick up my fiancé from work when he asked me what something was and pointed out his window. An aircraft black in color shaped like a hornet getting ready to sting came out of nowhere and landed back in the woods. This thing was landing in a C shape but with a noticeably fatter top side. I was later informed by my family that there is a small military installation back there. It’s in Marion Illinois. I’ve tried to look up information on new aircrafts in the military and I can’t find anything that looked like this or even lands vertically like this? Any ideas?

Hmmm, an aircraft shaped like a C, fatter on top? Could it have been a cargo helicopter, carrying something slung underneath? How far away was it when you saw it?