detailing a plan that was out there the pentagon was working on to exchange a number of hostages held in afghanistan and pakistan. for a single detainy. that the u.s. was holding. and there were different masinations of this plan. one would have included bowe bergdahl who was exchanged for five taliban prisoners, as well as warren winestein and then this canadian couple and the baby that is believed the woman had in captivity. he said it's a tragedy because this didn't have to happen. warren winestein didn't have to die. what's your reaction to that? >> i have not discussed that with duncan. i have been at any number of briefings. i've never heard that discussed. especially on the intelligence committee where we get briefed on a regular basis, that's the first i've heard of that.