The TEC have their own variant of the Hangar Defense.
Official Description: The orbital hangar houses two squadrons of fighters or bombers before it can defend their planet's gravity well. hangar defense must be researched before it can be constructed.
This building as said functions as a hangar. Flak Turrets adds very powerful anti-fighter/anti-corvette autocannons onto the Hangar.
More practical than the Gauss Turrets. They should be placed within the defensive perimeter of a starbase when in the late game, when you need to hold a choke point. However, they have some use early on, where they effectively counter corvettes. Should you be in a very bad position early on, this upgrade and hangar defense are almost mandatory for your defense. They have four banks and do 80 damage per second.
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