John, R. S., Rosoff, H., Barrett, A., & Bier, V. Modeling effects of counterterrorism initiatives on reducing adversary threats. Decision Analysis Society sponsored presentation at the annual meeting for the Institute for Operations Research and Management Science (INFORMS), Charlotte, N.C., November 13-16, 2011. John, R. and Rosoff, H. (April 2011). Modeling Effects of Counterterrorism Initiatives on Reducing Adversary Threats to Transportation Systems. Invited paper presented at the DHS Fifth Annual University Network Summit. Session Chair: Heather Rosoff.