Man charged with killing woman, 2 daughters had early prison release

The man charged with killing an ex-girlfriend and two of her children in a North Side stabbing rampage early on Tuesday likely would have been deep into a 12 1/2-year federal prison sentence if sentencing guidelines for convicted crack dealers had remained unchanged. Wendell L. Callahan, 35, twice benefited from changes in federal sentencing guidelines, which reduced his sentence by a total of more than four years, from the 150 months he was first given in 2007, to 110 months in 2008 including t