Staff Sgt. Vladimir Ramirez, Army Forces armorer, shows Honduran first responders how to replace a filter on the water purification system of the Pre-positioned Expeditionary Assistance Kit, or PEAK, Aug. 31, 2011, at Soto Cano Air Base, Honduras. The PEAK is a modular system that provides potable water, communications and power generation, and information sharing to first responders immediately following a disaster event. (U.S. Air Force photo/Tech. Sgt. Matthew McGovern/Released)