Check out how fake news called out 9 second intervals while dressing up the fake event with trusted commentator color, sending shivers up the spine of views.
This vid calls 9 second intervals all dressed up by ABC News, not the other.
Regulation USMC 5 Second Interval 21 Gun Salute?
https://www.c-span.org/video/?c4939414/user-clip-cspan-21-gun-salute-trump-farewell-speech-joint-base-andrews
Regulation Army 21, 3 second interval, 4 guns