Lori Petty and Bobby Moynihan have been added to the cast of CBS’ upcoming “NCIS” prequel series “NCIS: Origins.” The thesps will join a cast that also features Austin Stowell, Kyle Schmid, Tyla Abercrumbie, Michael Molino, Diany Rodriguez and Caleb Foote, with Mark Harmon serving as narrator. In the series, Petty will play Dr.