A former Marine admitted on Monday to killing his 3-year-old son in February 2014. Brian O’Callaghan, who has served in Iraq, faces up to 40 years in prison for the charge of child abuse resulting in death, though first-degree murder has been dropped. Court documents reveal that O’Callaghan’s adopted son from Korea, Hyunsu, was brought to Children’s National Medical Center suffering from fatal blunt force injuries causing internal bleeding and injury to his brain.
