Anson Mount, Cam Gigandet, Freddy Rodriguez and Bill Fichtner round out of the cast of “Code Name: Geronimo,” John Stockwell’s actioner about Osama bin Laden’s killing.Tony Mark and Voltage Pictures (“The Hurt Locker”) are producing. Script’s written by Kendall Lampkin. Mount stars as an agile and assured member of SEAL Team Six. Kathleen Robertson is portraying an eager CIA case officer dedicated to her job. Geronimo was the code name for the operation that sent two teams of Navy SEALs into Pakistan to hunt and kill bin Laden. Shooting began this week in New Mexico. Mount’s the lead on AMC’s “Hell on Wheels” and stars in Lionsgate’s upcoming “Safe” with Jason Statham. He is repped by Innovative Artists and manager Emily Gerson Saines at Brookside Artists Management. Others cast as SEALS are Robert Knepper, Xzibit and Kenneth Miller while Fichtner, Robertson and Eddie Kaye Thomas are playing the CIA officers.