Definitely standardize batteries, but why CR123A? Those are good for the high output Surefire tactical lights, especially the non-LED models. But for long life, that high output isn't the way to go. The polycarbonate plastic construction, LED's and AA (alkaline or lithium) batteries are ideal in a survival situation.
Some of the very good non-pyro signal devices like the green laser flare use CR123's as well as some of the raft lighting systems we're looking at. It's easier to find a good LED flashlight with good qualities using a CR123 battery, than it is to find certain types of strobes and signals in AA. CR123s are relatively cheap in quantity and it's easy to pack lots of extras in a small space.
Our existing flashlights are hideously outdated. Though I can get over 40 hours of burn time out of a pair of five year old alkaline D-cells (if they're not corroded), it's a feeble glim of light. At the very least it would be better to put in a Terra-Lux Ministar LED replacement bulb than what we have now, but my plan is to completely replace the flashlight.
Tom
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