Fire truck struck by driver while working crash on I-20 in Parker County By FOX 4 Staff article A Parker County fire engine was struck by a truck while on scene of another wreck on I-20 Sunday morning. Parker County Emergency Services reports there were four firefighters who were in the fire engine at the time of the wreck, and their lives were put in danger. The $650,000 fire engine, which is three months old, is now out of service. There were four other vehicles involved in the crash. Parker County ESD Fire Chief Stephen Watson said that people need to follow the law and move over for emergency vehicles.