The extras casting director for the third and final chapter in “The Hangover” trilogy is holding open casting calls in Nogales and Tucson, Arizona for people interested in working as paid extras on the film. Casting Director Maryellen Aviano has personally informed me of these open casting calls and the details. Arizona shooting commences in mid-October, 2012. Returning for “The Hangover Part III” are Zach Galifianakis, Bradley Cooper, Ed Helms, Mike Tyson, and Ken Jeong in an expanded role. Heather Graham will also reprise her role as Jade, as will Sasha Barrese as Tracy.