SCO-19, officially known as the Specialist Firearms Command, is an elite unit within London's Metropolitan Police Service (MPS). It's responsible for providing armed response capabilities and dealing with incidents involving firearms. The unit is trained to handle high-risk situations, including counter-terrorism operations, hostage rescues, and armed confrontations. SCO-19 officers are highly trained marksmen, skilled in a variety of weapons and tactical operations. They are often deployed in scenarios where there is a significant threat to public safety, making them a crucial component of the MPS's ability to respond to serious crime and terrorism in London.