While the military is still hashing out plans to outfit soldiers with their own smartphones, gadgets are already a part of daily life of troops in the field. Of course, more technology means more demand for power, and the Army has been evaluating technologies for flexible, lightweight photovoltaic tents and shades. "They are ideal for charging up batteries, making sure your (communications), night vision goggles and computers are powered up. You don't want a generator on top of a mountain, and you don't want to have to bring fuel to a generator or haul batteries