Roscoe Bartlett just happens to have Alliant Technologies and about twenty other EMP shelter/hardening/weapons defense companies inside his district, or very close by in Virginia. Don't think this is anything but returns on campaign contributions. At last analysis, a corporation gets a return of six hundred and twelve dollars for every dollar they spend on campaign contributions when spending more than $100,000.
Sure beats the market or securities investments.
I agree that the threat's liklihood will be pumped up beyond reality, but I disagree with the idea that the threat itself isn't real. A nuclear strike on a modern US city would be completely devastating to the entire nation.