Production on a planned NCIS spinoff is moving full steam ahead.

So far, three names have already been confirmed for CBS’ latest hour of crime. Louise Lombard (CSI), the series’ lead female, will star as a a former major in the military police. Notes from the Underbelly‘s Peter Cambor has been cast as an operational psychologist while Daniela Ruah will play a young investigator with a degree in forensics and criminology.

Two well-known actors are also in talks for the other leads. Chris O’Donnell (Batman & Robin) is currently negotiating for the role of Callen, a “chameleon” who can easily transform into different identities. Meanwhile, the well-toned LL Cool J is being eyed for the part of Sam Hanna, an ex-Navy SEAL.

The new team will be introduced later this spring during a regular episode of NCIS.