We used to have a combat engineer battalion in the local National Guard, ideal for rapid deployment to emergencies like Puerto Rico or Indonesia where they need heavy equipment in a hurry. The unit got repurposed a few years back, no more dozers and graders and loaders . . .
I remain unconvinced that I am saving the environment when I have to wash our recycling. (Collected every other week. If you don't wash stuff, it stinks.)