DURING TESTS OF THE INCAPACITATING AGENT CS, DETAILED OBSERVATIONS OF THE BREATHING BEHAVIOR OF SIX HUMAN VOLUNTEERS WERE MADE BY MEANS OF THE REMOTELY-CONTROLLED BREATH-RECORDING SYSTEM. ALTHOUGH THE BREATHING PATTERNS WERE DISRUPTED BY CS, ADEQUATE VENTILATION OF THE LUNGS WAS MAINTAINED, SO THAT THE INCAPACITATION IS ATTRIBUTED TO THE UNPLEASANT SENSATIONS RATHER THAN TO ANY DEGREE OF RESPIRATORY FAILURE. (AUTHOR ABSTRACT MODIFIED) (REFERENCES)