This issue of the TRISA Red Diamond spotlights several articles of that gained particular interest in 2012. The topics range analyses of real-world threats in an operational environment (OE) that U.S. and coalition forces could be deployed, international tensions between or among states, and description of selected weapon systems and capabilities that can affect tactical, operational, and strategic levels of conflict. Other articles express how the opposing force (OPFOR) of the U.S. Army’s Opposing Force Program applies of such capabilities for unit and activity training and readiness. Tactics, techniques, and procedures (TTP) of the regular and irregular OPFOR are documented in the U.S. Army’s training circular 7-100 series. These training circulars continue to be updated in 2013 with the intention of unlimited distribution in situational awareness and understanding of the threat.