(Milwaukie, OR)  --  Authorities say a 19-year-old man who was involved in a standoff with SWAT personnel in Milwaukie has died.  Police say the man, who was armed with a rifle, barricaded himself in an apartment in the Holly Acres complex on Southeast Concorde, where he had been reported to be threatening family members.  Officers fired at least two rounds and sent tear gas into the apartment after the man brandished the rifle.  The suspect, who suffered gunshot wounds, was taken to a hospital around four o'clock yesterday afternoon, and died later.