You can subdue an unsuspecting foe quickly.
Benefit(s): When a flat-footed creature is unaware of your presence and you successfully grapple it, you can attempt a second grapple combat maneuver check to pin the creature as a free action. If you have the Chokehold feat, you can instead use this second combat maneuver check to initiate a chokehold.
Pathfinder Roleplaying Game Monster Codex © 2014, Paizo Inc.; Authors: Dennis Baker, Jesse Benner, Logan Bonner, Jason Bulmahn, Ross Byers, John Compton, Robert N. Emerson, Jonathan H. Keith, Dale C. McCoy, Jr., Mark Moreland, Tom Phillips, Stephen Radney-MacFarland, Sean K Reynolds, Thomas M. Reid, Patrick Renie, Mark Seifter, Tork Shaw, Neil Spicer, Owen K.C. Stephens, and Russ Taylor.