For Troops, 'BRRRT' Is Sound Of Music: All About The 'Avenger' In Hormuz

The US Air Force (USAF) issued a formal request in November 1970 to build a 30 mm rapid-fire cannon for a new close air support platform, which became the GAU-8/A Avenger carried by the A-10 over the Strait of Hormuz
Source: ndtv-world