Frank Anthony Grillo (born June 8, 1965)[1][2] is an American actor known for his roles in films such as Warrior (2011), The Grey (2012), End of Watch (2012) and Zero Dark Thirty (2012). He had his first leading role in the action horror film The Purge: Anarchy (2014), portraying Sergeant Leo Barnes, a role he reprised in The Purge: Election Year (2016).