Okay kiddo, let's talk about secret service codenames. You know when you play spies and you give yourselves cool names like "Super Spy" or "Spy Kid"? Well, the secret service does that too but in real life!
When important people like the president or other government leaders need protection, the secret service gives them a special name which is their secret codename. This name is only known to a few people and it helps protect them by keeping their real name a secret.
For example, the current president of the United States has the codename "Renegade" and his wife has the codename "Renaissance". These names are made up of one word that starts with the same letter as the person's real name, so it's easy to remember.
Sometimes, the secret service will also give codenames to the people who are protecting the important person. This is to keep their identities a secret too.
So, secret service codenames are sort of like secret spy names that important people and their protectors use to keep their real names a secret and stay safe. Pretty cool, huh?