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United States Coast Guard Port Security Units are deployable units organized for sustained force protection operations. They can deploy within 96 hours and establish operations within 24 hours. PSUs conduct OCONUS port security in support of requesting regional Combatant commander. They provide waterside protection to key assets (e.g. pier areas, high-value vessels, harbor entrances) at the termination/origination point of the Sea Lines of Communications (SLOCs). PSUs may operate in U.S. territorial waters under the direction of a Coast Guard or Maritime Defense Zone (MDZ) command or in foreign waters as part of Maritime Expeditionary Security Forces (MESFs) within the Navy Expeditionary Combat Command structure. PSUs often operate with other MESF elements, such as Maritime Expeditionary Security Squadrons (MSRONs) within a Maritime Expeditionary Security Group, and are part of the Coast Guard's Deployable Operations Group (DOG). However, PSUs are not a regular part of the United States Special Operations Command (USSOCOM). == History == In addition to their most recent support of homeland security operations around the country, PSUs were deployed to the Persian Gulf during Operation Desert Storm in 1990. They also served in Haiti during Operation Uphold Democracy in 1994 and more recently responded to Port-au-Prince, Haiti immediately after the devastating 2010 earthquake. In December 2000, PSU 309 from Port Clinton, Ohio was deployed to the Middle East to provide vital force protection for the Navy assets following the attack on the USS ''Cole''. The current PSUs evolved out of Coast Guard Ninth District's Reserve PSU program that began in the 1980s, but the port security mission and service goes back even further. Previously, the Port Security program of the Coast Guard began with the passage of the Espionage Act of 1917 and due to the Black Tom explosion. Coast Guard's Captain of the Port (COTPs) were given responsibility for the security of port areas under this act. During World War I, port security operations were conducted by active duty personnel. After the war, interest in port security waned until pictures of burning ships visible from US shores as the country entered World War II rekindled media and public attention. The Temporary Reserve was created and made up of armed volunteers under command of the COTP. Over 125,000 citizens would eventually serve as Temporary Reserves. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Port Security Unit」の詳細全文を読む スポンサード リンク
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