You protect an ally from attacks he doesn't see coming.

Prerequisite(s): Int 13, Combat Expertise.

Benefit: If you successfully use the aid another action to give an ally who also has this feat a +2 bonus to AC against an opponent's next attack, the ally is also not considered flanked or flat-footed against that opponent until the beginning of your next turn.

Normal: You can use aid another to grant an ally a +2 bonus to AC against the next attack from an adjacent foe.