The last video in your post is one of my favorites, and I remember seeing it many times a few years ago when I was researching the Boston Bombing (as that specific company IMO was closely involved in that specific false flag event through a continuous multi-day DHS exercise called Urban Shield Boston, an exercise which that same company was a direct partner of).

A Detailed Breakdown of the Boston Bombings & 24 Hour Manhunt
Part 1: https://steemit.com/conspiracy/@budz82/boston-bombing-a-detailed-breakdown-of-the-boston-bombings-and-24-hour-manhunt-part-1-2
Part 2: https://steemit.com/conspiracy/@budz82/boston-bombing-a-detailed-breakdown-of-the-boston-bombings-and-24-hour-manhunt-part-2-2