surprise. they thought they were in, quote, a quiet environment. >> hans, do we look at the evacuation process, tenippicicay the dod wants to get them out in an hour, but there are questions on whether that is possible in parts of africa specifically, right? >> reporter: the golden hour is the rule, that's what they want to achieve. they recognize in africa you are not always potentially going to achieve that. in part, because you have special operators in remote areas. and just when you look at what could have been the recovery mission when they still thought that david johnson could have been alive, you had forces coming in from all over the globe flying into niger bringing in all kinds of assets. so this isn't, although there are 800 to 900 u.s. forces in niger, this is not a place with huge air support or close air support. and you certainly rely on the french for medivac. >> so this investigation, this review by the department of defense, by the pentagon, will look at where the intelligence