Transparency International (TI) has published the Corruption Perceptions Index (CPI) since 1995, annually ranking countries by their perceived levels of corruption, as determined by expert assessments and opinion surveys.. The CPI generally defines corruption as the misuse of public power for private benefit..
The Vehicle Born Improvised Explosive Device (VBIED) is but the latest such incarnation of a very old theme - but with a deadly, sometime mass destructive force. The DHS defines this as a potential weapon of mass destruction.
The methods of different VBIED attack and construction are currently described in such publications as the Al Qaeda Manual and several extremist websites and easily available to anyone with an interest. It is important to remember that there are current domestic hate groups and extremists active in all 50 states.