BREAKING: U.S. Marshal killed in line of duty in Harrisburg identified as Christoper David Hill, 45

Three Mile Island to conduct siren system test at 12:15 p.m. Thursday


HARRISBURG, DAUPHIN COUNTY, Pa.– Three Mile Island is set to conduct a test of their siren system on Thursday.

The test is set to take place at 12:15 p.m. on Thursday and should only last for about three minutes.

There is no need for alarm.