OC Systems Inc. of Fairfax, Va., will supply the Ada compiler and software development environment for the United Kingdom Combined Arms Tactical Trainer program, which will use about 1 million lines of Ada code developed by as many as 100 developers concurrently. This project is related to the U.S. Close Combat Tactical Trainer developed by Lockheed Martin to help train combined-arms forces consisting of armored units such as main battle tanks and armored personnel carriers. OC Systems will also provide on-site engineering support. For more information, phone OC Systems at 703-359-8161. - J.K.