The ultimate objective of survival in any location for any situation is to endure and or overcome. All actions, strategies and the mindset need to prioritize according to these rules:
-Survival for 3 MINUTES without AIR
-Survival for 3 HOURS without SHELTER
-Survival for 3 DAYS without WATER
-Survival for 3 WEEKS without FOOD
With these rules in mind, you have a foundation to plan and execute the methods of survival.