at events like that? >> i think there will be. we want to continue to live our lives while remaining vigilant and aware of what the potential is. so there will be enhanced security. there will be police officers roaming. they might have bomb dogs sniffing through the crowd. they'll have some type of physical search. they're going to do that. it's important to make sure and demonstrate that we're taking the necessary precautions. but at the end of the day, we've got to balance our ability to live as americans in a free society with security and we'll have to constantly assess as we go forward. >> shaun, thanks so much. up next, we'll go live to belgium where authorities have carried out a raid and made a number of arrests. how did belgium become a focal point for the attacks in paris? that's next. introducing boost 100 calories. each delicious snack size drink gives you... 25 vitamins and minerals and 10 grams of protein.