 After this occurred Jim and Kate realised Kate's true feelings for Mike, but nothing has been done to act on those feelings.In episode 4 of Season 3 (“Guns”), a former RAN Lieutenant Geoff Kershaw (portrayed by Sullivan Stapleton) is rescued after his ship sinks in a storm and is a temporary passenger whilst the ship deals with arms smuggling.It is revealed that Mike left a reputation when he passed through Officer Training at ADVA, which he puts down to a whoopie cushion under an Admirals chair during his Graduation Ceremory he was responsible for.