February 18, 2014 5:44 pm Md. Father Charged With Adopted Son's Death Brian P. O’Callaghan, an NSA official, has been charged with the murder of his adopted 3-year-old son, Montgomery County police said Tuesday. News4’s Kristin Wright reports. Local 3:28 Social media and teens' mental health: A psychiatrist weighs in 1:41 DC-area police ramp up traffic enforcement in pedestrian safety campaign 3:05 ‘We need real liberation': George Washington University pro-Palestinian protest enters fifth day 2:17 GW asks to students to move pro-Palestinian demonstration 3:01 “It's 100% different”: Community reflects on emergency curfew at National Harbor