This article points out the need for a national Silver Alert program. Right now only ten states have the program. Sadly, Florida is not one of these state. If you are concerned about this you should consider writing to your state representative and attaching this article or the article from The New Old Age.
I encourage you to read when Mom Goes Missing to learn more about the Silver Alert program and the growing problem with wandering seniors.
The 36-Hour Day: A Family Guide to Caring for People with Alzheimer Disease and Memory Loss in Later Life