Security forces provide basic police duties on ship, as well as protective duties to landing parties.
The normal Minor field for Security is Communications. The Security Officer (also called the Tactical Officer) is usually expected to operate the ship's communications systems.

Weapons: Phaser, Unarmed Combat, Diplomacy, Electronics Operations: Phaser Cannons, Electronics Operations: Security Systems, Gunner: Phaser Cannon, Federation Martial Arts: (Anbo-Jytsu), Vehicle training, Small weapons combat, Psychology: (Terran), Survival: (choose), Tactics, Tactics: Small Units