Thank you for clearing that up.
I watched and listened to what was going on that night. A person cannot be in two places at the same time.
There was more than one shooter in Dallas that night.
Yes there was only the man on the upper floor, the man at street level on the cell phone video was an optical illusion caused by mass hysteria which is the same reason UFOs do not exist.
Also the same reason that an eye witnesses to the capture of the Boston Bombers saw something totally different and has never been heard from since. Or the reason George Soros who is very proud of his Nazi past is untouchable. Or the reason that NASA always lies.
It is all part of the same thing whatever it really is.