A program using hydrogen fuel cells to reduce a vehicle's detectability has revealed other potential uses for the technology, which the service is exploring. Powering an assault vehicle or a command post are among the possibilities, the project lead with the Tank Automotive Research, Development and Engineering Center told Inside the Army . A demonstration last month in Hawaii proved the system's stealth in a simulated reconnaissance mission pitting the 2nd Squadron, 14th Cavalry Regiment, 25th Infantry Division, in humvees...