Interesting blog post on technological innovation and war-fighting, including a link to the Z Backscatter Van, which uses special imaging technology

...which offers photo-like images that reveal contraband that transmission X-rays miss - such as explosives (including car bombs), people and plastic weapons - and provides photo-like imaging for rapid analysis...

The manufacturer's website describes this capability in more detail and provides a video, complete with cheerful music, showing how the equipment can turn everything it passes into the opacity of clear glass. The backscatter X-ray is tuned to organic wavelengths, enabling it to find hidden people and explosive. But this is not all it can do. For an optional extra, the Z-Backscatter Van can also find those pesky dirty bombs and nuclear weapons that every well-managed city wants to be rid of, all at a low price and in an environmentally responsible manner: getting frisked by the Z-Backscatter Van only requires an exposure equivalent to a fifteen minute flight on a commercial aircraft.

If I ever get tired of being a medical radiologist, perhaps I could start a second career in security x-ray image analysis. (Via Howard Roerig.)