U.S. Army Engineer Research and Development Center’s (ERDC) scientists and inventors John Furey and Cliff Morgan stand outside the ERDC Environmental Laboratory (EL) in Vicksburg, Mississippi, in 2013. The two were part of an ERDC EL Environmental Systems Branch team that developed an electronic collimator invention that detects gamma radiation, a penetrating form of electromagnetic radiation arising from the radioactive decay of atomic nuclei. The invention enables the warfighter with a detector capable of directional detection without the use of shielding. (U.S. Army Corps of Engineers photo)