I( think it could work well as a signal if you were the one who needed rescuing, but I think the beam is a little too tight for searching beyond your eyes' ability to see over long distances. I'll be happy to be proven wrong though.So far this all has been vary enlightening. One of the first thoughts I had after seeing the beam comparison was how well would an LEP do as a SAR light, specifically a rough-country SAR where beam distance would be more important? It would obviously not be the only light needed. A longer throw LED would be needed for closer examinations where spill would be needed.