A beachcomber brought home what she thought was a rusty old plate. Months later, she learned it was a landmine

(CNN) — Back in April, Jayne Wilson found what she thought was an old plate lying on the beach. The truth is a bit more explosive. Wilson, who works as a private home health aide, was walking her client's dog around sunrise on Indian River Shores beach, in Florida. The avid beachcomber likes collecting sea glass, so she examined the sea shell beds as she walked -- just in case something caught her eye.