If I were going to hike in Alaska I would carry pepper spray.
And likely it would be my first response.
Some if's. How would one us it if:
If one were attacked in a tent?
Strong wind in the face?
If it goes off accidentally while driving the car?
If it goes out of date after 2 years?
If the temp dips low and the stuff won't work?
If the temps get hot and it explodes?
http://www.survivalreviews.com/index.php/articles/selfdefense/130-really-bad-dealWhen a bear is already mauling a friend?
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One study alone is not enough. And both the park service and the
national forests in Alaska say bring more than one kind of
protection.