mr. david morrow. you are recognized. >> good morning. discuss the efforts to prevent a dirty bomb attack on a us port. preventing the smuggling of aa nuclear radiological device into the us is understandably and deservedly a top national priority. as we are from the other witnesses there are a wide away a programs and activities at several federal agencies to help address and mitigate this threat. mymy statement focuses on one key aspect of this much larger effort, the covert operations to assess capabilities to detect and interdict the smuggling of nuclear materials and the us. over the years dhs has invested billions to develop, purchase, and apply radiation detection equipment on the nation's borders as well as equip and train personnel on how to use the technology. they have invested substantially less on testing to see whether it is being properly used. for example, over five years cvp spent 1 million for covert testing, and that covered all types of covert testing, not just nuclear radiological. it is important to give them credit,