NORFOLK, Va. (AP) _ A U.S. Navy pilot has been sentenced to 50 years in prison on child pornography and other charges. Prosecutors say Lt. Daniel Harris contacted nine underage girls online and coerced them into sending nude photos and videos of themselves to him. Harris was convicted on 31 charges in March by a federal jury, including production of child pornography and obstruction of justice. Media outlets report that the 31-year-old Virginia Beach resident was sentenced on Monday in U.S. District Court in Norfolk.