I doubt that old man could run back and forth to those two windows several times in 5 minutes without being winded and exhausted, or having a heart attack. Let alone do it while reloading them all and firing them downwards out a window. The other videos showing shooting from other areas prove this is not a lone wolf. Its more contrived propaganda so you will patriotically hand in your weapons for the good of society. Then no one can resist beyond screaming bloody murder as your educated on how the world really works.