the same time inflicted casualties so it was the other big piece of an insurgency in other words kaminskimerican people were losing car bomb can't be stopped time to get out. insurgents use car bombs against any target the u.n. religious shrines police stations and street markets. the blast of the car bomb turned blitzkrieg to defeat. to counter the car bomb the u.s. military has established. joint improvised explosive device defeat organization. with an annual budget of four billion dollars. most of those work is top secret vast electronic countermeasures to jam remotely detonated bombs . but some of it is just good old fashioned intelligence. will we defeat the car bomb for i don't think you can ever say that a car is a commercial entity and you go buy a car and then if you want to go get some fertilizer if you've got a few stray rounds of one five five shells such a file and i mean just suddenly you can make a car bomb and so it's not something that you're ever going to be able to eliminate from the battlefield because the components are all there. across the world governments are hard

kaminski: cryptosporidium was a wake-up call. it was a wake-up call for us. it's a wake-up call for the nation. take care of your infrastructure before you have the kind of problem we had. biedrzycki: by no stretch of the imagination do i think we're out of the woods. recent cdc statistics indicate that up to 32 million cases of waterborne disease occur each year in this country. roy: but the vast majority of waterborne outbreaks go undetected. when people first get ill, they think, "oh, it's something i ate last night." they don't think, "oh, it's something i drank last night." narrator: the milwaukee incident pointed out the potential vulnerability of our drinking water infrastructure in controlling the spread of illness. biedrzycki: it's incumbent upon us to try to stay ahead of the curve, but it's very, very difficult. there's always another bug on the horizon. narrator: in 2008, the associated press reported that water quality testing across the nation uncovered trace amounts of pharmaceutical compounds in the drinking water supplies of millions of ameri