Airports with "prison-worthy" seats

Ever wondered who makes those seats at airports? This HBR piece mentions that OMK makes "prison-worthy" seating for airports, self-sealing polyurethane can withstand a stabbing: http://blogs.hbr.org/cs/2011/11/stop_competing_to_be_the_best.html . Kinda fitting that airports would have "prison-worthy" seats.