Pub. L. 105-85, div. A, tit. III, subtit. B, sec. 326
COMMON MEASUREMENT OF OPERATIONS TEMPO AND PERSONNEL TEMPO.
SEC. 326. COMMON MEASUREMENT OF OPERATIONS TEMPO AND PERSONNEL TEMPO. (a) Means for Measurement.—The Chairman of the Joint Chiefs of Staff shall, to the maximum extent practicable, develop (1) a common means of measuring the operations tempo (OPTEMPO) of each of the Armed Forces, and (2) a common means of measuring the personnel tempo (PERSTEMPO) of each of the Armed Forces. The Chairman shall consult with the other members of the Joint Chiefs of Staff in developing those common means of measurement. (b) PERSTEMPO Measurement.—The measurement of personnel tempo developed by the Chairman shall include a means of identifying the rate of deployment for individual members of the Armed Forces in addition to the rate of deployment for units.