Another butch Afghanistan front veteran, colonel Ethan Willis, makes his televised entry by helicopter operating on one of three victims of a great white shark attack. Yet he shows sensible sensitivity dealing with Angus Leighton's frustration not to be allowed to treat his kin and the triangle between the surviving shark victims, sisters of major age difference. Mario Savetti has bad luck starting as newbies' mentor when an overruled call turns out surprisingly right due to a crazy sex game. Jesse Sallander mediates between lush cardiac patient Henry Underwood and his all but amused son Randall in wedding tuxedo. Due to budget cuts, Will Campbell's department has absorbed ER, so the cocky chief Leanne Rorish is duly demoted to his deputy..