Interesting...
If your primary camping needs are covered by your truck camper, then I wonder if you might need to go in a different direction for natural disaster response?
We went to Florida after Hurricane Andrew to assist in setting up basic plumbing for temporary water supplies. The infrastructure was so damaged that our project idea was of no help at the time.
If your goal is to be able to haul food supplies with you and cook when you get there, I would consider a small toy hauler, or back country type camper designed to be off-grid capable. "Better to have and not need..."
Examples: Outdoors RV Black Rock 20RD. 4-seasons camper, off-road suspension, custom frame, 2" thick laminate walls, solar panel ready etc. Pricey, but tough, and you'd have to buy out West and haul it back.
Black RockSister company Northwood makes some slick 5th wheels:
Northwood Fox Mountain 5th wheelsLivin' Lite makes a line of aluminum framed toy haulers with living quarters. Instead of "toys" you could haul your food and outdoor kitchen supplies, golf cart, whatever.
VRV Toy HaulerWhile at Livin' Lite, look at their Camplite travel trailer as well.
and if you can get down to Atlanta easy enough, this one has gotten my attention, a closeout price on a Camplite 21RBS travel trailer: Quality=yes, small=yes, budget=?
2016 Camplite 21RBS saleYou didn't mention a budget, but Alabama Jim, on this forum, has a Riverside RV camper, and as far as traditional "stick and tin" campers, he likes his and toured the factory with very positive feedback.
Riverside Mt. McKinley Toy HaulersAnd a cool 5th wheel:
Riverside Retro Fifth WheelKeep us posted on your search, this is great opportunity to combine your hobby with serving your fellow man in need.