Okay kiddo, so you might have heard about police, right? They are the people who make sure we are all safe and following the rules. Now, in some parts of big cities, there are special groups of police officers who have extra skills to deal with really tough situations. They are called Territorial Support Groups (TSG).
These TSG officers wear special uniforms and have special equipment, like helmets and shields. They are trained to control big crowds of people who might be angry or violent, or to deal with people who are causing trouble and don't want to listen to the regular police officers.
Sometimes, TSG officers might also help in catching criminals who are trying to run away or hide. They are like the superheroes of the police force, ready to step in when things get really tough. That's why they get a lot of training to make sure they know how to handle any situation that might happen.
So, to sum it up, the Territorial Support Group is a special group of police officers who are trained to deal with really tough situations in big cities. They are like the superheroes of the police force!