The North Atlantic Treaty Organization (NATO) held an Advanced Research Workshop (ARW) about modeling of infrastructure risk in Primosten, Croatia on May 9–13, 2006. The US Society for Risk Analysis and Enconet International Zagreb cosponsored the ARW. Daniel M. Byrd and Dejan Skanata were the ARW director and co-director. Early on, Byrd and Skanata formed an organizing committee, consisting of the following seven (7) scientists:

Daniel M. Byrd, Ph.D., D.A.B.T., LSRO, Inc., Bethesda, MD, USA;

Adrian Gheorghe, Ph.D., ETHZ, Zurich, Switzerland;

Jacques Ganoulis, Ph.D., AUTh, Thessaloniki, Greece;

James Lambert, Ph.D., University of Virginia, Charlottesville, VA, USA;

Igor Linkov, Ph.D., Cambridge Environmental, Cambridge, MA, USA;

Davor Sinka, M.Sc., Enconet International, Zagreb, Croatia; and

Dejan Skanata, Ph.D., Enconet International, Zagreb, Croatia.

The program included papers and/or posters by most of the approximately forty (40) engineers and scientists. The objective, exploring different methodologies and related applications, recognized four (4) major topics:

Complex Models;

Simulation Models;

Distributional Models; and

Deterministic Models.

Extensive discussion concentrated on the following issues: the state of the art and practice, gaps between the arts and practices, ways to bridge the gaps, and future research directions. The co-organizers and the organizing committee take pride in the effectiveness of the ARW. The major factor in satisfaction with the ARW was its intellectual content. A good agenda and organization led directly to the intensity of discussions.

The Editors