View: https://youtu.be/HdmObsIyrVk?si=eWjHLGFKJ2iP_J8e
Footage of Imperial Japanese Navy Air Service Mitsubishi G4M 'Betty' twin-engine bombers flying in formation somewhere over the South Pacific (Most likely the Solomon Islands). You can see throughout the footage that some of the bombers are firing their Type 99 20mm cannons located in the tail turret.
