FOXNews is reporting the same....with no more info, and yes, the obvious correlation to make is that this guy might be another dangerous terrorist. FOXNews added, this guy explained the residue might be from firecrackers. Makes you wonder,doesn't it....they obviously had this guy in their clutches, long enough for him to offer an explanation...how the heck did they let him get away?
They must have told the guy, "you've got explosive residue on your shoes". This is a puzzle.......I'm waiting to see if the guy was middle eastern in appearance.