flak
Mid-air explosions (or the remaining smoke clouds of those explosions) from ammunition fired by anti-aircraft guns.
See Also
* anti-aircraft gun* anti-aircraft
* explosion
* 88 flak
External Links
* Wikipedia: Anti-aircraft warfare* Example: Wikipedia: B-24_Flak.jpg
* Example: Wikipedia: B-26_taking_flak
* Example: Wikipedia: Mitsubishi_G4M1_bombers_fly_low_through_anti-aircraft_fire[…].jpg
* Example: Wikipedia: Mitsubishi_G4M1_bombers_fly_low_through_anti-aircraft_fire_near_a_destroyer[…].jpg