I learned the "be prepared" attitude in the mid-70s as an AirForce EMT in central Alaska. We looked after the military and civilian community as needed where-ever and whenever for what ever. Responding to emergencies in minus 70 degrees was a learning experience. It was just me and my partner..no cavalry unless there was a literal fire or gas spilled all over. Air splints don't work, tape won't stick, IV lines freeze up, fingers freeze when you have to work without your gloves on, tires get low at the worst time, ...you name it. It was great fun. Everything else after that was easier.