I was hiking near Leavenworth, WA last weekend, and heard a low growl within 20 feet of me and my g/f.
Since our only way down was in the direction of the growl I gave her a little pep talk. "If it's a bear, I know you're going to want to run. Don't run"
She was scared and asked me if I was scared. I said no, but really I was already pissing my pants. We got to the bottom of the mountain without seeing anything.