I EDC a 2-AA Mag Lite. I only use a little at a time but it's there when I do need it so I am changing the batteries maybe three times a year at the most. In this hypothetical situation I imagine I will use a flashlight more frequently.

Jeanette Isabelle
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I'm not sure whose twisted idea it was to put hundreds of adolescents in underfunded schools run by people whose dreams were crushed years ago, but I admire the sadism. -- Wednesday Adams, Wednesday