This group stresses being able to stay alive for indefinite periods in life-threatening wilderness scenarios, including plane crashes, shipwrecks, and being lost in the woods. Concerns are: thirst, hunger, climate, terrain, health, stress, and fear. The rule of 3 is often emphasized as common practice for wilderness survival. The rule states that a human can survive: 3 minutes without air, 3 hours without shelter, 3 days without water, 3 weeks without food. 
Do you know the difference between a brown bear and a black bear? Hopefully you won’t come into contact with either of them but, if you do, you better know the difference – because you should make some LOUD noises and stand your ground if you encounter a black bear but WALK slowly away if you encounter a brown bear! Better yet, make sure you’ve got a can of bear pepper spray in your survival pack if you plan on going somewhere where there are bears…
This group focuses on surviving brief encounters of violent activity, including personal protection and its legal ramifications, danger awareness, John Boyd's cycle (also known as the OODA loop—observe, orient, decide and act), martial arts, self-defense tactics and tools (both lethal and non-lethal). These survivalist tactics are often firearm-oriented, in order to ensure a method of defense against attackers or home invasion.
I'm not quite crazy enough to say that epinephrine will help you survive the inevitable zombie apocalypse (you can go here for that). I'm just suggesting in a roundabout way that if you happened to be in a situation where something was trying to eat you, the increased heart rate and blood flow to your muscles brought on by a well-timed dose might just save your life.
Although declining salmon numbers, pollution and noise disturbance pose the most immediate threats to the whales' survival, Millman reports that other factors may be at play. — Meilan Solly, Smithsonian, "Pacific Northwest Orca Population Hits 30-Year-Low," 10 July 2018 As the South Wales side look to avoid relegation, Dzyuba could help to provide the goals which are so pivotal to Premier League survival. — SI.com, "Cardiff Interested in Signing £6m-Rated Zenit Striker After Impressive World Cup Displays," 6 July 2018 Experts have noted for decades that the North Koreans consider nuclear weapons as key to the regime’s survival by deterring a foreign invasion. — Alex Ward, Vox, "Let’s just say it looks like North Korea is lying about giving up its nukes.," 2 July 2018 Being a part of the city, instead of just the county, were key to RB’s survival. — Elizabeth Marie Himchak, Rancho Bernardo, "Rancho Bernardo's founder, Harry Summers, has died," 26 June 2018 There is nothing commendable about leaving all work to others, or in pretending that no level of work is essential to survival. — Brian O’connor, Time, "Why Doing Nothing Is One of the Most Important Things You Can Do," 15 June 2018 Their goats were crucial to the family's survival, because they had eaten and trampled down the undergrowth that surrounded their home, starving the flames. — Barry Hatton, The Christian Science Monitor, "Portugal races to protect its citizens against wildfires – with goats," 13 June 2018 Age might bring wisdom and experience, but young bodies capable of quick recoveries have been key to the Sun’s survival in early June. — Kelli Stacy, courant.com, "Youth Keeps Connecticut Sun Fresh Amid Hectic Travel Stretch," 10 June 2018 The government has jailed some 60 officers in the army, whose support is vital to the regime’s survival. — The Economist, "As Venezuelans go hungry, their government holds a farcical election," 17 May 2018