Aegis (ee-jis), which in Greek means shield or protection, is also the code name for the world's premier integrated air defense system and the sea-based element of the United States Ballistic Missile Defense System. SOG's comprehensive Aegis line of premier folders is fully integrated with top end systems. Start to open the knife, and let Aegis finish the action with a bang, using one of the surest assisted technologies (S.A.T.) out there! SOG Assisted Technology works through the balance of opposing high-tension coil springs. As one opens the blade the force to propel the knife open becomes greater than the closing force and the blade will open on its own. The end result propels the blade out once the operator has initiated the one-handed opening action. S.A.T. works so well that right-handers can use their left hand equally well to open a folding knife (of course this works oppositely for lefties).SOG's trademark bayonet reversible clip, built in safety with green/safely locked, checkered DigiGrip handles, and tacky rubber inserts all contribute to make Aegis a platform for today's changing world. Cover your back with Aegis outdoor or tactical blades.