This close-up photo shows a component of a PackEye

This close-up photo shows a component of a PackEye Radiation Detection Backpack being used by the New York National Guard's 2nd Civil Support Team (CST) to detect radiation during Operation Clear Passage, a three-day, multi-agency homeland security exercise and water quality/navigational-boating enforcement event held on Lake Champlain from July 22 to 24. During the operation, 2nd CST members successfully found radiation sources on a boat and parked cars in and around the lake. Members of the 2nd CST and New York Naval Militia were among more than 75 personnel from 17 federal, state and international agencies that conducted law enforcement, homeland security and environmental monitoring missions throughout the operation. (U.S. Army National Guard photo by Master Sgt. Raymond Drumsta)