Ryan you said that when you go out at night you have a 2 way radio to call for help ,who is on the other end .

im glad that nothing ever happened to the night workers .i would have thought there would be something different as a safety like a dead man alarm .
You hit it when you go out and if you dont get back in to turn it off it sounds an alarm after a set time so it tells the others that are sleeping some thing is wrong

just an idea