If a big tornado comes through the first responders will have some rough idea where the shelter is in the rubble.
Exactly. Yes, first responders are going to search for areas hit by tornadoes. However, it's nice to know that they have the GPS coordinates of where your shelter is located and they know to check on you. Still though, I always tell our customers don't just rely on that. Inform your family and friends you have a shelter. Take a whistle into the shelter with you and have a box of supplies consisting of bottled water, granola bars, weather radio, whistle, flashlights with extra batteries, toilet paper and a 5 gallon bucket if you're in there for longer than expected if you get my drift.