The crossword solution for the term 'CRUSH (A FLY)' is SWAT, which stands for Special Weapons and Tactics. SWAT teams are specialized police units that are trained to respond to high-risk situations such as hostage takings, barricaded suspects, and terrorist threats. They are also used to apprehend dangerous criminals and to control civil unrest. SWAT teams are typically equipped with specialized weapons and equipment, such as assault rifles, body armor, and flashbang grenades.