U.S. Persons includes: U.S. citizens, U.S. nationals, lawful permanent residents, individuals granted refugee status in the U.S., and individuals granted asylum in the U.S. This job description is subject to change by the employer as the needs of the employer and requirements of the job change. Physical demands include continuous movement, including frequent standing, walking, stooping, kneeling, climbing, pushing, pulling, reaching, and other use of hands.