A horrific incident....
The attack followed a prolonged row over work shift patterns....
He pleaded guilty to 13 counts....
"We will not hesitate to act where people make these sort of threats."...
...
GMP has called this a "harrowing investigation"....
He pleaded guilty to causing criminal damage during the disorder....
Stephanie Heaps did not declare any links to criminals or criminal activity....
GMP says he "abused his position as a police officer" and is a "disgrace" ......
