i want to start with you, mustafa qadri by asking how do you quantify strikes the u.s. won't confirm. >> that's a really good question. the problem is, this is a region which is so remote, so lawless and a program that's so secretive that even finding the details of nine strikes out of 47 inform the last 18 months is very difficult. so even just getting information about a couple of strikes is a great achievement. >> ifill: how did you it? >> basically we have a developed team, independent researchers, people trusted by us who have worked on human right issues with us. we get them go to these regions, talk to local people in an environment where they're trusted, they feel safe, basically they can those facts, any gaps in it we go back. we treat this information initially very keptally. after we've got the information and we're confident with what we've got we compare it with audio material, satellite, traffic imagery. the report we have is based on thoroughly researched testimony. >> ifill: mr. dunlap, do you trust the numbers? the way they've gathered their information