Suffield's training range covers over 2,600 square kilometers and provides tank training for Canadian and British forces. The training also includes the detection, identification, antidotes, and analysis of chemical/biological agents. The United States uses the facility for chemical and biological warfare training. Advanced training is provided to those who are already experts in chemical/biological response. A minimal level of expertise is required for the advanced training, since live agents are used. The training facilities simulate a wide variety of environments where chemical/biological teams might be required to operate. There is a cave, a car, postal facility, offices, the ruins of a collapsed building, and a subway station for use in training exercises. Mannequins and small traces of "simulants" (nonlethal biological agents that mimic real bio agents) are used in exercises in the use of detection and analysis equipment. In some training scenarios, actual chemical agents such as mustard gas have been used in controlled small doses. In addition to a training regimen, Suffield also houses an advanced research and development facility and conducts an R&D program established through the Chemical, Biological, Radiological Memorandum of Agreement between the United States, the United Kingdom, and Canada. Among its achievements has been the development of Reactive Skin Decontamination Lotion, recently approved for use by American forces by the U.S. Food and Drug Administration. Suffield scientists are currently examining treatments for victims of a chemical/biological attack. Improvements in protective suits are also being pursued.