A silver alert is something that happens when a special message is sent out to help people find someone who is missing. This someone is usually an older person who might need help or might not be able to find their way back home.
Just like how your parents make sure you have your name and address with you when you go to someplace new, older people might have a special card or bracelet that has their name and address on it. If they get lost, they might not remember where they live or how they can find their way back home.
When someone goes missing, a silver alert is sent out through different ways like on the TV or the internet, so that many people all over the place can see the message and help look for the person. It might also have a picture of the person, so it's easier for people to recognize them if they see them.
All the people in the community help to keep an eye out for the person, and if they see them, they get in touch with the special helpers, who then go and help the person out. This is how a silver alert works, and it's important to help out anyone who needs it, so they can be safe and sound with their loved ones.