Flak gun

The Flak Gun was an energy projectile weapon used by the Terran Confederation and Kilrathi fleets. Flak guns were a purely defensive weapon used by capital ships to lay down barrages of protective flak. They were featured in both Weapons of the Terran and Kilrathi Fleets and Borger's All The Sector's Weapons Systems.

Wing Commander

Joan's Fighting Spacecraft -- Vega Sector Supplement for 2654.092

Fighters provide the bulk of a capital ship's defense, but the largest ships in the Therran and Kilrathi fleets lay down heavy flak barrages which can bring down and ship in space.

Wing Commander: Armada

Gunnery Officer's Report

Flak guns provide most of the side and rear gun protection for carriers. Computer-operated, they employ explosive energy bursts. Flak guns have medium range and high firing rates, and they diminish power more slowly than other guns.

Flak Cannon

Wing Commander II: Vengeance of the Kilrathi

Joan's Fighting Spacecraft 2664.128 Update

Fighters provide the bulk of a capital ship’s defenses, but the largest ships also lay down heavy flak barrages that can bring down any fighter. In addition, flak cannon are used for point-defense against torpedoes.