Mark: Of all things to be in the "Environmental Response Unit" it's actually a radio controller lawn mower .... maybe they have emergency situations where a berm MUST be mowed urgently ?  :-)

A reminder that you've already given the answer :-)

"Traditional Weed eating is very hazardous for the Crew due to some of the slopes,
access paths,live traffic,weather and other worker nearby. The activity is very
labour intensive, laborious and costly. Continual improvements in reducing costs
and increasing productivity is very difficult do to the constrains of the task.
A new radio controlled slope mower (Spider) has been trailed on the network. It
only requires one (1) operator to control the mower. The mower can cut 1.7 acres
per hour and can climb at 41 degrees."

Cheap at only $115k