Discerning the proper angle of fire, you point out concealed enemies to your allies.

At-Will   ✦     Martial
Minor Action      Personal

Effect: Choose one enemy you can see. Until the end of your next turn, any ally who can see or hear you doesn't take the normal penalty to attack rolls for cover or concealment when attacking that enemy (the penalties for superior cover and total concealment still apply).

Published in Martial Power, page(s) 107.