Okay kiddo, have you ever heard of people who use radios to talk to each other instead of using phones or texting? Those people are called amateur radio operators, or "hams" for short. They have special licenses that let them use radios to talk to people all over the world.
The Radio Amateur Civil Emergency Service (RACES) is a group of hams who are trained to help in emergencies. When something like a big storm or earthquake happens, regular communication systems like phones and internet might not work. That's where the RACES hams come in.
They have special radios and computers that can still work when regular communication is down. They can talk to emergency responders like police and firefighters to help them find people who need help. Or they can talk to people who are stranded or need medical assistance.
The RACES hams also practice for emergencies ahead of time, so they will be ready to help when they are needed. They learn how to set up radios and antennas, how to send messages and how to work together as a team.
Overall, RACES is a special group of hams who use their skills and radios to help people during emergencies.