2011 report by the Congressional Research Service on expenditures for conflicts and terrorism-related operations since 2001.
2010 study by Mississippi State University published in Natural Hazards on the effectiveness of a large university’s emergency warning system.
2004 paper in the Journal of Strategic Studies on the dynamics of aerial campaigns over Iraq and Bosnia.
2007 report from Harvard Kennedy School’s Belfer Center on necessary steps in the aftermath of an act of nuclear terrorism in a U.S. city.
2006 study by the University of Colorado, Rutgers and UCLA on the likely effects of a nuclear explosion in a densely populated city.
2008 chapter from Tsunami Science Four Years After the 2004 Indian Ocean Tsunami measuring the action taken on a Tsunami activity database.