Hello my fellow patriots. I know this is something that seems to be accepted but I saw some debate about it earlier today. I have done research on this and came across this website and the person has done some really great research on it and provides a sufficient amount of evidence and references: https://write-aholic.com/why-didnt-biden-get-a-presidential-battery-salute/
Biden did not receive a Presidential 21-gun salute.
From my own findings here is what I found that I didn't see in the article above: During ceremonies, the platoon fires 3-inch antitank guns mounted on a 105-mm howitzer chassis. Three-man crews, consisting of a watchman (time keeper), loader and gunner, fire at intervals from three to eight seconds, depending on the type of ceremony. from: https://home.army.mil/jbmhh/index.php/teamJBMHH/units-tenants/TOG/presidential-salute-battery
Only two were fired for Biden. The intervals were not 3-8 seconds. That was not a standard Presidential 21 Gun Salute.
Military always does things by the book. They don't slip up. This was intentional. They were telegraphing, amongst themselves and to everyone who understood this significance.