CNN Newsroom With Alisyn Camerota and Victor Blackwell
Crime before, that is something that will be key to try to get to the bottom of this. >> let's hope that leads them to the suspect. thank you very much for the latest on that investigation. joining us now is security correspondent josh campbell, tom gburny, a former detective, anda former assistant secretary at the department of homeland security. joulia, i want to start with yo. i was so interested that n something that you said earlier on the air. you said in all of your training for a hypothetical mass transit attack like this, the first thing you do is shut down the subway system. they d...
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