 "Swain" needs to deal with a desperately ill crew mate and cannot rely on his second medic, Bomber, who is too upset by Spider's illness to offer much assistance.Season four sees the return of "Swain's" more compassionate and caring side, and the new Buffer, Dutchy, appears to take over some of "Swain's" duties.Continuing as Chief Medic, with Bomber transferring off the ship he has a new protégé to train Jessica Bird.