Executive Producer of Drama and Production at Network Ten, Rick Maier, issued a statement on the show's official Facebook page: "While we don't discount a return series, it is not on the cards at this stage – but we do intend to finish season four with a bang, literally.

[5] The pilot featured several characters and cast who did not return for the series, including Matthew Le Nevez, Libby Tanner and Corinne Grant.

The series was initially rejected but years later was picked up for production when the 2007–2008 Writers Guild of America strike affected Ten's imported shows.

[6] Sergeant Dominic "Dom" Wales, played by Josef Ber, was originally scripted to be killed in the first season, however during production Van der Boom asked to be released.

[10] A thirteen-episode fourth season was confirmed by Channel Ten's Executive Producer of Drama and Production, Rick Maier on 12 November 2010.