There is a new opportunity for you guys; aerial firefighting. You may need to re-think valves, pipes etc. Get involved with fire retardant foam and the largest tanks the wings will handle with practicable airspeeds.
Take the Yorkshire UK fires last year and the smaller one earlier this year. The ground, being peat, was actually on fire. I reckon the firefighters would have welcomed the damping down you can provide. Try West Yorkshire Fire and Rescue. Lay on a demo.
The Aussies have crop dusters in their fire fighting inventory.