This all went down on Sunday, a guy on the highway near New Brunswick, New Jersey started recording after a semi hit some black ice and crashed right in front of him. Then he turned around and saw another semi, coming right at him, lose control.

I was blocked by two trucks on south bound I-95 at exit 9 in NJ (New Brunswick exit). I only wanted to take a picture while i was awaiting for them to clear up... And then I heard a noise from behind...I was barely missed.
UPDATE (moved from the bottom of the description, since no one bothers to read it): Once I turned off camera, I called in 911 and reported the accident. After that I came to the truck and the rest of the cars to verify they were alright. After arrival of NJ State Trooper and his dismissal confirming that he does not require my presence, I left the scene.