CNN High Profits May 16, 2015 01:33:00
>> anomalies like this, the man in the white hat who after the first blast doesn't even flinch. >> so it was the absence of a reaction. your normal reaction if you hear a loud noise, you automatically will shift your head toward the direction of that loud noise. he didn't do that. he was unfazed, and that was the thing that really stood out. >> a crucial lead to follow. >> we started retracing, back this up. do we see him with anyone else? and then we do. we do see him with an individual wearing a black cap. >> investigators believe they have identified their suspects, but they don't have thei...