Operation Alliance, Southwest Border Drug Control Strategy II, El Paso, Texas, June 1992. Operation Alliance is a coordinating headquarters for the Southwest Border High Intensity Drug Trafficking Area (HIDTA), established by the Office of National Drug Control Policy. Its task is to facilitate coordinated federal, state and local counterdrug actions in high threat counties of Texas, New Mexico, Arizona, and California. 
- William W. Mendel, "Counterdrug Strategy - Illusive Victory: From Blast Furnace to Green Sweep", Military Review, Foreign Military Studies Office, Fort Leavenworth, KS. December 1992, pp. 74-87.