Homeland Security Secretary John Kelly on Friday said the terror threat is worse than most realize, saying some people would "never leave the house" if they knew the truth.
"I was telling [Fox host] Steve [Doocy] on the way in here, if he knew what I knew about terrorism, he'd never leave the house in the morning," Kelly said on "Fox & Friends."
He noted there were four major terror attacks in the last week — in England, Egypt, the Philippines and Indonesia — "by generally the same groups."
"It's everywhere. It's constant. It's nonstop. The good news for us in America is we have amazing people protecting us every day. But it can happen here almost anytime."
Masked gunmen opened fire on a group of Coptic Christians driving to a monastery in southern Egypt on Friday, killing 26 and injuring 25 more.