 Before replacement, they included an interoperability switch which allows the Red Cross to communicate with the variety of communication systems based in the nationwide network of chapters.The nine base vehicles for the original design, 2000 Ford Excursions, were donated by Ford Motor Company; subsystems and components were primarily acquired through funding via the Disaster Technology Integration Program (DSTIP).The vehicles were extensively modified to add an 8.5KW alternator driven by the engine (keeping weight down, thereby avoiding significant safety hazards), a 52' pop-up pneumatic mast capable of rotating while holding a large yagi antenna, a KU VSAT satellite antenna system, and sixteen HF, VHF, and UHF antennas feeding its radios and interoperable voice and data systems.