I did some more digging on the 21 gun salute. The ONLY one Biden got was for his visit to Arlington as a FOREIGN DIGNITARY.

Here is an article saying the 21 gun salute at Arlington was to mark Biden's inauguration.

He did not get one before this or after this. It was with 3 guns at 10 second intervals which, at Arlington, is SPECIFICALLY for a foreign dignitary visiting the Tomb of the Unknown Soldier.

https://en.wikipedia.org/wiki/21-gun_salute#United_States

The number of cannon used in a battery depends upon the intervals between each round fired. This includes, for example, a three-gun battery firing two of its guns with five-second intervals between rounds and one gun remaining at the ready in case of a misfire; such a battery would be used at an Armed Forces Full Honors Funeral, or for State Arrival Ceremony of a foreign dignitary at the Tomb of the Unknowns in Arlington National Cemetery.

The wiki is wrong about the interval with 3 guns. It is 10 seconds, not 5 seconds.

Here’s the same 21 gun salute with 3 guns at 10 second intervals given when the Defense Secretary of Jordan visited Arlington.

From wiki:

Today, a 21-gun salute is rendered on the arrival and departure of the President of the United States.

The one earlier on inauguration day is for Trump's departure that morning, NOT for Biden who was not President yet.

Find the 21 gun salute that Biden got for HIS inauguration, like Trump did here. You won't, because it DID NOT HAPPEN.

Past Presidents received the 21 gun salute with 4 guns at 3 second intervals.

More 21 Gun Video Research:

History of Presidential 21 Gun Salute fired as soon as the President is sworn in (1 min video)

HISTORICAL VIDEO PROOF:

Carter in 1977 at 18:25

Reagan in 1981 at 20:35

Reagan in 1985 At 1:05 Interestingly…moved inside due to weather (7° with -25° windchill factor). Still see and hear those cannons though.

Bush 41 at 23:45

Clinton 1st at 59 min

Clinton 2nd at 32:30

Bush 1 at 21:05

Bush 2 at 1 hr

Obama 1 at 32

Obama 2 at 41(hard to hear over crowd)

Trump 1 at 1 hr

Biden at 33:30 NO 21 GUNS only SILENCE

21 Gun Salute Wed afternoon, only this salute is different with 10 sec breaks and they only used 2 guns out of 3 at the wreath laying: Clip:

Full: approx 14 min to 17+min mark. It takes 3.5 minutes to fire 21 rounds with 10 sec intervals.

Grunge trying to sell the later 21 Gun Salute

CNN too

They pulled most of their article from this Army site

Strange that with so many military in attendance they would not do a very traditional military thing…that has been done at every other inauguration I can find.