About 10 years ago my wife, who was home alone at the time, had walked to the back of our yard at the edge of the woods and unlocked my barn to go inside and get something. As she went in, she somehow closed the door behind her hard enough that the latch's steel hasp swung around and slipped over the hasp knob effectively locking her inside with no way to push the hasp open from inside. I build those doors 4” thick and short of using a chain saw to cut her way through, she could not get back out. She remembered my SSB CB radio that I have mounted on a shelf with a small 12 volt DC power supply plugged in that I use as my CB base station setup for many years and turned it on and began scanning channels to find someone that she could contact. Luckily for her, a good Samaritan was driving nearby with their CB radio on and answered her call. She said he really thought at first that someone was pulling a joke on him with this story about a lady trapped inside a barn needing someone to drive to this address to let her out. He took a chance; came by, walking into the fenced in back yard with our dog running loose, walked to the back of the lot where the barn stood and opened the barn door, setting my wife free. In this day and time, I’m not sure how many people would believe that story over a CB radio, much less drive alone to a strange home, go inside someone’s fenced in lot with a strange dog running loose to open a barn door.