On 21 September 1987, Iran Ajr , an Iranian ship converted for use as a minelayer was attacked. Using night-vision devices, army gunship crews watched the Iranian vessel lay several mines, then swooped in firing miniguns and rockets. A SEAL team boarded the vessel and quickly seized it. During the attack, five Iranians were killed and 26 were captured. Several Iranian sailors were rescued from the waters of the Persian Gulf after jumping overboard during the attack. After collecting intelligence data the SEALs and EOD scuttled the vessel the following day. 
This is a list of acronyms , expressions , euphemisms , jargon , military slang , and sayings in common or formerly common use in the United States Marine Corps . Many of the words or phrases have varying levels of acceptance among different units or communities, and some also have varying levels of appropriateness (usually dependent on how senior the user is in rank). Many terms also have equivalents among other service branches that are not acceptable among Marines, but are comparable in meaning. Many acronyms and terms have come into common use from voice procedure use over communication channels, translated into the phonetic alphabet , or both. Many are or derive from nautical terms and other naval terminology . Most vehicles and aircraft have a formal acronym and/or an informal nickname; those are detailed in their own articles.