First thing I would be looking at is young man, probably exchange student or home grown disgruntled young man dollars to donuts a student. The device from what I see contained a high degree of alcohol in the mixture hence the color of the smoke. Peroxide perhaps but I don't think so ... Al Queda are far more experienced but can't rule out a newbee recruit. I suspect we have a home grown lone wolf or exchange student type as in the NYC attempt. Anyway, I leave it up to the pro-filers that know better.