Dal isn't on my terrorist watch list.
Anybody who is as knowledgeable about science as he is is just way past being fascinated with blowing things up for any reason. Frankly, I worry more about what Obama wants to blow up. Back in my day, we had serious concerns about who we'd put on the job that includes the button that launches our nuclear arsenal. The only thing that stopped that from happening is the certain knowledge that if you hit that button, you'd be blown up along with everything else.
That whole nuclear horror deterrent is gone now. We have little drones that can pick off the personal enemies of our Commander in Chief.