Disaster rescue and relief is expensive work. Remote areas often lack landing strips for large supply craft, and helicopters are incredibly expensive to own, operate, and maintain.
"(Bill) Lishman is on to a new project - a tiny, skeletal aircraft he hopes will revolutionize the business of disaster relief. Mr. Lishman wants to pack more than a dozen of the little planes into a container that can be flown to areas such as Sudan's Darfur region, where they could be deployed like mechanized hornets, buzzing to hard-hit sites with loads of food and medical supplies." (Al Fin)