While performing the duties of this job, the employee must be able to stand, walk and sit for a prolonged period of time; use hands and/or fingers to handle, or feel objects, tools or controls; operate office equipment, reach with hands and arms; climb stairs; balance; stoop; kneel; talk or hear; taste or smell. Knowledge, Skills, and Abilities: Must have a broad understanding of technical security disciplines such as, but not limited to: countermeasures, emanations security, technology evaluations, threat and risk analysis, technical surveillance countermeasures, command center operations and contingency operations.