You have expanded expertise at ranged combat.
Benefit: Half of the competence bonus from your Archer trance is added to your damage rolls for attacks made with ranged or thrown weapons (natural weapons do not count for this benefit). In addition, when using the Archer maneuver, you may perform a bull rush attempt instead of a trip attempt.
Psionics Expanded: Advanced Psionics Guide. Copyright 2011, Dreamscarred Press; Authors: Jeremy Smith and Andreas Rönnqvist.