cases. officials are saying these were potential explosive devices. yesterday, they were saying they were bombs, so what's the difference? >> that's a really tough line to walk the fact of the matter is to make an explosionive device, it must have power, a power source, an explosive material, wires and a detonator a blasting cap. heat shock friction. that's what bomb technicians think about. that's what it takes to ignite one of these devices. some of that could be simply unscrewing the end of a pipe. right? the friction from unscrewing that pipe, that cap of the pipe can actually cause enough friction to ignite that. that's why these are so fragile and so dangerous. and until a certified bomb technician clears it, everybody, the american people should consider these extremely dangerous. >> you speak as a certified bomb technician. i'd like you to everybody stand