Postal Inspection Service . Brokaw not at fault , U.S . Postal Inspection Service spokesman says . Accident occurs when driver swerves to avoid spool of wire on the road , near postal truck . Driver , who was driving behind the postal truck , hits rear of that truck , spokesman says .
Brokaw not at fault , U.S . Postal Inspection Service spokesman says . Accident occurs when driver swerves to avoid spool of wire on the road , near postal truck . Driver , who was driving behind the postal truck , hits rear of that truck , spokesman says .