Presidential Salute Battery Marks Biden's Inauguration with 21-Gun Salute – NBC Bay Area
What caliber rifle is used in a 21-gun salute? - Quora
Gun salute in York marks proclamation of King - BBC News
File:Flickr - Official U.S. Navy Imagery - Sailors fire a 21-gun salute during a burial at sea..jpg - Wikimedia Commons
The Singapore Army - The 21-Gun Salute executed by 23rd Battalion, Singapore Artillery. It is the highest salutation conferred and is reserved only for the President's inspection of the parade.
AC/DC Tribute band
Enter OHA's 21 Gun Salute Raffle! - Oregon Hunters Association
Haligonia.ca - A 21 gun salute from 1 FD Arty Regt sounds
21 Gun Salute Concours d'Elegance – International Vintage Car Rally & Concours Show