The Milwaukee County Medical Examiner's Office has confirmed the identities of the two men killed in a boating accident late Monday night.  They are 35-year-old Nick Kukoljac from Milwaukee, and 28-year-old Juston Segura of Milwaukee.    According to the police, the accident occurred at 10:38 p.m. when a 19-foot power boat struck the Milwaukee Harbor break wall, just north of the main gap, straight out from the Hoan Bridge.  Police say witnesses reported hearing the crash and then people calling for help.  Two females, ages 22 and 23 were rescued from the break wall and transported to a local hospital with non-life threatening injuries.  At 12:17 a.m., the bodies of the two male victims were recovered near their partially submerged boat by members of the Milwaukee Fire Department Dive Rescue Team.  The U.S. Coast Guard also assisted in the recovery.