text: FM 2-22.3 _________________________________________________________________________________
  and approaches for obtaining information will be used to conduct the
  interrogations.
  WORK LOCATIONS
  K-21. The commander may position contract interrogators in fixed
  detention facilities anywhere in the theater, in accordance with the terms
  and conditions of their contract.
  ATTIRE
  K-22. Contractors accompanying the force should be visibly distinct from
  soldiers so as not to jeopardize their status. The JTF or combatant
  commander may direct contract personnel to wear civilian clothing or a
  uniform that says “civilian.” Specific items of military attire required for
  safety or security may also be worn, such as chemical defense equipment,
  cold weather equipment, or mission specific safety equipment.
  FIRE ARMS
  K-23. A contractor authorized to accompany the force in the field is not
  entitled to be issued a firearm. However, a contract employee may be armed
  only if all of following conditions are met:
  • The theater commander grants his approval.
  • The employee's corporate policy allows it.
  • The employee agrees.
  K-24. If all three conditions are met, then the employee must pass proper
  military side-arm training and will be issued a military specification
  weapon and ammunition (generally, a 9-millimeter pistol) for personal
  protection. The contractor must also comply with all applicable DOD,
  service, and local command policies on weapons.
  RECOMMENDED READING
  DOD Instruction 3020.41. Contractor Personnel Authorized to
  Accompany the U.S. Armed Forces. 3 October 2005.
  AR 715-9. Contractors Accompanying the Force. 29 October 1999.
  DA Pamphlet 715-16. Contractor Deployment Guide. 27 February
  1998.
  FM 3-100.21. Contractors on the Battlefield. 3 January 2003.
  FM 63-11. Logistics Support Element Tactics, Techniques, and Procedures.
  8 October 1996.
  AMC Pamphlet 715-18. AMC Contracts and Contractors Supporting
  Military Operations. June 2000.