1 mile off the Atlantic Ocean when in Florida, just the Ocean salt mist in the air will badly corrode and pit things real quick.
Anything bare steel is bad, tools and wrenches sitting around in the little tool shed all get rusty just from the salt in the air. In the shed under cover out of the rain.
Anything on a car body or a trailer with bare steel showing gets rusted and pitted bad. If it has paint on it, then it is fine because it is sealed and protected.