I think light sources are very important. You need not only low powered lights for long runtime, LED's for reliability, but also some bright incandescents for long range illumination, and rechargeables for economical use. Also, you need a headlamp for hands free use in case you have to fix something, and of course you need backups in case something starts working. Here's a picture of someone properly equipped with suitable flashlights. Some people might think these are more lights than are strictly necessary, but I say it beats getting caught in the dark. <img src="/images/graemlins/smile.gif" alt="" />


(Source: Stainless on candlepowerforums.com)