The U.S. Department of Homeland Security is responsible for protecting U.S. borders against terrorist threats, criminal endeavors, illegal immigration, and contraband. Unfortunately, due to budgetary and other resource constraints, it cannot "see and be"
Joel B. Predd,Henry H. Willis,Claude Messan Setodji,et al. Using Pattern Analysis and Systematic Randomness to Allocate U.S. Border Security Resources. 2012-01-01.