Phase 2 consisted of integrating these components into a robust, militarygrade EDHUMS, designing a data analysis process, testing EDHUMS in the CONUS training environment, and beginning to field EDHUMS in operational units outside of CONUS, including the U.S. Central Command's area of responsibility. The COTS vehicle data acquisition system that will be used on tactical wheeled vehicles must * Be dust- and water-tight. * Be small in overall size. * Have robust, military-grade cable connections. * Accept 12- and 24-volt power inputs. * Provide a method for remotely switching the unit on and off. * Be compatible with the vehicle bus, GPS, and displacement, strain, acceleration, and temperature gauges. * Operate in maximum outside ambient temperature of 49 degrees Celsius (120 degrees Fahrenheit) with a solar radiation load up to 1,120 watts per square meter. * Meet conducted emissions and susceptibility requirements of Military Standard 461, Requirements for the Control of Electromagnetic Interference Characteristics of Subsystems and Equipment. * Survive the vibration levels typically experienced by various tactical wheeled vehicles.