Headquartered in Exton, PA and having offices in Hampton and Vienna, VA, Wagner Associates is organzied around the design, development, implementation, and training for custom scientific software. Wagner associates is experienced at implementing sophisticated mathematical algorithms in software modules that can be used effectively by military personnel in real-world operations. For more than four decades, Wagner personnel developed the CASP Search and Rescue system and have continued to further develop the field of computer assisted search (CAS). These CAS systems use highly sophisticated mathematical algorithms to evaluate and optimize the effectiveness of Anti-Submarine Warfare (ASW), Surface Warfare (SUW), Air Warfare (AW), and Mine Countermeasures (MCM) and Search and Rescue (SAR) operations. In particular, the Navy has used these systems very effectively in real-world and exercise operations. These CAS systems were the first implementations of what are now known as particle filters. Wagner Associates was also the originator of the IOU Kalman Filter (aka Maneuvering Target Statistical Tracker (MTST)), which has been utilized in many DoD systems such as the Global Command and Control System (GCCS) and the Tomahawk Weapon Control System (TWCS). Through the years, Wagner Associates have advanced work in both the theoretical and the applied realm. Famous examples of the application of search theory involving Wagner Associates participation include: the 1966 search for an H-bomb lost by the U.S. Air Force near Palomares, Spain; the 1968 search for the sunken nuclear attack submarine USS Scorpion (SSN-589); the search and recovery operation after the space shuttle Challenger accident; and the search for the SS Central America, a treasure ship that sunk off the Carolinas during a hurricane in 1857, whose discovery returned more than $400 million in gold.