The youtube is back up, at full speed it is hard to see it all, but go to settings and bring the speed down to .25 and the shooter is seen quite well. He is coming up from behind the camera man, and starts shooting as he gets close. There is really nothing else to see, and if he had not shown himself at all, perhaps nothing for the two reporters to react to. The only person with any chance of seeing him, is the subject of the interview. CTI has captured the video in-case youtube pulls it again.
from CTI Consulting https://www.youtube.com/watch?v=9ZrYS6V5WvQ