Ambush Awareness (Combat)Source Dirty Tactics Toolbox pg. 12
You are always on your toes and rarely caught off guard.
Benefit: If you are unable to act in a surprise round because of failing a Perception check, you still roll initiative normally. You can act on your initiative count in the surprise round, but you can take only the total defense action.Source Armor Master's Handbook pg. 20 (Amazon)
You can spend 3 stamina points to grant the benefit of this feat to an adjacent ally. (Dirty Tactics Toolbox 12)