we posed a number of questions to mr. dalrymple who frankly couldn't answer many of them, but said he would get back to uses but one thing he offered to the committee, he believes 37 times this technology, without a probable cause warrant, was used on american taxpayers. >> by the irs. >> by the irs, yeah. good point. there are other agencies using it too, i believe without fourth amendment probable cause type of warrants. and that the irs is currently in the process of purchasing an additional sting ray unit, additional technology at cost of several hundred thousand dollars. would you believe, do you believe that's in the best interests of taxpayers? >> i don't know that i have enough information to answer that question. i need to know who is going to use it and what are the protections for using it. and, i don't have the knowledge