Washington parents accused of injecting three children with heroin.  In the midst of America's alarming heroin epidemic, the drug's damage can best be seen in the faces of children pictured --  like the Ohio boy buckled up in a car behind his two overdosed caretakers  -- and those just outside the frame. For the latter, look no further than a recent case involving two parents in Tacoma, Washington, who could go to prison for decades after allegedly injecting their three young children with heroin. At home, they called it "feel good medicine," according to court records. Heroin's devastating effects on display in police photo   Ashlee Hutt, 24, and Mac Leroy McIver, 25, face a litany of charges including three felony counts each of unlawful delivery of a controlled substance to a minor, criminal mistreatment and assault of a child. Court documents say the Tacoma parents admitted to state social workers