RSI Model 9612D Chamber System, Conroe, Texas RSI Model 9608D Chamber System, Walter Reed Army Med Ctr RSI Designed 3 lock Chamber, Wright Patterson AFB, Ohio Hyperbaric Swimming Treadmill, US Olympic Village, Colorado RSI Model ATR-6 Altitude Training Chamber, Dhaka, Bangladesh RSI Model ATR-20 Altitude Training Chamber, Univ. of North Dakota Sechrist Monoplace Chambers with RSI Air Ventilation System RSI Model 17-48 Research Chamber