In article Bxv3f.435623$_o.343983@attbi_s71,
"Jay Honeck" wrote:


All this talk about idiots shining lasers in pilots eyes has me wondering if
we shouldn't add a laser pointer to the collection of knives, blankets, and
food? Anyone think one of these would work as a signaling device?


Answer is "Yes, probably work very well" -- esp. if you get one of the
green ones, though they're substantially more costly than the red ones
($150 vs $15).

Post your query to sci.optics or rec.skiing.backcountry and you'll
probably get more detailed answers.