They could install simulators in the Armories and base the actual K9s at the training centers. Hire the Techs to maintain them there. On a long stretch you could outsource most of the maintenance to local Civi companies. Ya someone is going to say they need security clearance and also know how to fix intricate optical electrical specialized systems. The civi world has more security cleared people then the Military, the equipment can be worked on at the local base if required. There are many more experienced trained people in the civi field who can work on intricate systems then in the military.
There are viable workable solutions if people stop saying "can't", (all that means is "won't)