Military threat

ISBN 9781412831277. （原始内容存档于2020-08-04）. At its height, communism was the major threat to world peace, and by far the major source of international terrorism:

2013年车里雅宾斯克小行星撞击事件 Speech by Gen. Simon Worden: "Military Perspectives on the Near-Earth Object (NEO) Threat". United States Space Command. [2009-02-26].

Guide 互联网档案馆的存檔，存档日期11 March 2016., TRADOC DCSINT Threat Support Directorate, January 1999. JED The Military Equipment Directory. [2020-07-30]. （原始内容存档于2008-01-27）

Assess the Threat to the United States from Electromagnetic ... High-Altitude Nuclear Weapon EMP Attacks (CD-ROM) ISBN 978-0-16-056127-6 Threat posed by

定使大本營部隊防禦狀態提升至DELTA級。 信息作戰狀態 戒备状态 就緒狀態 觀察狀態 中國人民解放軍戰備等級 Military FPCON Threat Level and Threat Level Exercise Signs. [2013-09-12]. （原始内容存档于2012-08-25）