Lesson #9 Never Again will I go without a Light source on my person.
I have a AAA on my keychain (a ReVO) in addition to my Quark 123. We had a power outage while the tornado sirens were sounding so I was able to hand my oldest one flashlight to get one of her little sisters into our designated tornado shelter room while I used the other flashlight to get the other one.
Rely On No one and watch your lended out gear like a hawk.
Nobody returns flashlights during power outages. I keep about a dozen fauxtons on hand to give away.