When a Coast Guard pilot saw an SOS sign on top of a hut and a guy urgently attempting to grab his attention by flailing his hands in the air, he realized something was wrong.

The man said that he had been mauled by a grizzly bear and had spent the previous several sleepless days and nights warding off recurrent visits from the wild animal when he arrived at the isolated mining camp in Nome, Alaska.

Stop what you're doing and analyze the situation if you come across a bear on the route or in your campground. First, speak in a soothing, tranquil tone to distinguish yourself. Then, slowly back away, ideally in the other direction. Keep a close eye on the bear to observe how it will respond if you walk rather than run. The bear will usually escape in most situations.

When a bear feels threatened, it may 'act' aggressively in response to the perceived threat. A mother bear with cubs, a bear guarding a food supply, or an unexpected encounter are examples of this. Likewise, when a bear becomes aware of you, the closer you approach it, the more likely it is to respond defensively: it may snap its jaws or slap the ground with its front paw while blowing and snorting, and/or lunge or "bluff charge" toward you in an attempt to persuade you to go.

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