SWAT

From MicroWiki

SWAT (Special Weapons and Tactics; originally Special Weapons Assault Team) is a specialized unit in many United States police departments, which is trained to perform dangerous operations. These can include serving high-risk arrest warrants, performing hostage rescue, preventing terrorist attacks, and engaging heavily-armed criminals. SWAT teams are equipped with specialized firearms including submachine guns, carbines, tear gas, concussion grenades, and high-powered rifles for marksmen (snipers). They often have specialized equipment including heavy body armor, entry tools, steel reinforced boots and night vision optics.

There is also known to be a micronation named after this, Swatland, which fell on June 7, 2006.