On-line retail store services featuring spare parts, equipment, and maintenance supplies and tools for marine propulsion and power generation systems, shipboard power distribution, shipboard power conversion and conditioning, control and automation systems used in naval and maritime settings, and naval and maritime heating, ventilation, air-conditioning, and refrigeration systems, and equipment for thermal imaging devices, combat display workstations, electronic sensor systems, power systems, rugged computer systems, air combat training systems, mission recorders, deployable flight incident recorders, environmental control systems, telecommunication systems, aircraft loaders, and military trailers and shelters