A pre-employment physical fitness test is administered in four areas: body fat measurement, 1 minute of sit-ups, maximum number of push-ups, and a 1.5 mile walk-run. Applicants must be in excellent physical condition, with no defects which could hamper firearms use, defensive tactics or raids, and dangerous assignments. Vision and hearing requirements are strict. The new SA is taught how to proceed with conditioning to meet the fitness tests and rating scales used to determine whether the person stays in the training program. During training, the trainee is administered a fitness test that includes pull-ups, push-ups, sit-ups, a 120-yard shuttle run, and a 2-mile run. SA's on the job receive fitness-for-duty physical examinations once every 3 years until the age of 33. They are examined annually after this age. There are fitness advisers in each of the field offices and at Washington headquarters.