USAX #89491 was built as a hospital sleeper for the U.S. Army just at the end of World War II. In 1961, it was taken out of surplus storage in Ogden, UT for use on the Strategic Air Command’s “RBS Express.” RBS stood for “Radar Bomb Scoring,” which was a drill that the SAC used to score the accuracy of their bomber crews. Rather than practice in one location, the SAC put radar equipment on train cars to run drills in areas all over the country, and even once in Canada. The train was stationed for 45 days at a time and was entirely self-sufficient, requiring it to have sleeping quarters, a cafeteria, offices, and lounges. This car was used as a “recreation car” for men to use in their downtime. It had lounge seats, reading material, and a commissary for men to buy items they needed right on the train. The RBS Express was disbanded in 1971, and the cars found new uses in the armed forces. This car was used at the Naval Weapons Station Earle in Earle, NJ.