text: References
  INTERNATIONAL AGREEMENTS*
  QSTAG 585. Marshaling Helicopters in Multinational Land Operations. 23 April 1981.
  STANAG 2863. Navigational and Communication Capabilities for Helicopters in Multinational Land
  Operations. 26 September 1988.
  STANAG 3117. Aircraft Marshaling Signals. 17 October 1985.
  STANAG 3281. Personnel Locator Beacons. 3 April 1978.
  STANAG 3570. Drop Zones and Extraction Zones--Criteria and Markings. 26 March 1986.
  STANAG 3619. Helipad Marking, Third Edition. 20 March 1997.
  INTERNET WEB SITES
  Some of the documents listed in these References may be downloaded from Army websites:
  U.S. Army Publishing Directorate (USAPD)
  http://www.usapa.army.mil
  Army Doctrine and Training Digital Library (ADTDL)
  http://www.adtdl.army.mil
  Air Force Publishing
  http://afpubs.hq.af.mil/
  NATO Online Library (for International Standardization Agreements [ISAs])
  http://www.nato.int/docu/standard.htm
  * To requisition copies of standardization agreements, send a completed DD Form 1425 (Specifications
  and Standards Requisition) to Naval Publications and Forms Center (NPFC), 5801 Tabor Avenue,
  Philadelphia, PA 19120.