Protective Security Officer (POS) N. Dakota, S. Dakota and Montana Full Time and Part Time Security Officer Kerberos International, Inc. is an industry leading security company providing services to the U.S. Government and corporate America. Responsibilities Federal Security Officer duties include patrols, access control, CCTV Monitor, report writing, key control and screening. To be eligible to perform duties under this contract, a PSO shall meet the following general qualifications: Must be 21 years of age. Be a United States citizen; or a Lawful Permanent Resident who is currently a member of, or who possesses a verifiable honorable discharge from, any component of the United States Armed Forces (Army, Air Force, Navy, Marines, Coast Guard) Been issued a Social Security Card by the Social Security Administration, which bears the individual’s name and social security number. Have verifiable documentation of one experience and one education level.