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One upside to tools like the Garmin (and I _think_ the newest SPOT) is you get 2-way communication. This is good to describe your specific need (helicopter evac vs 2 people on foot to carry a stretcher) and location (are you stuck on the side of a cliff for example).

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I had a motorcycle accident in Tajikistan and it was invaluable. I wrote to a friend who could check the available options for me. I'm really glad I had it with me. Unfortunately I forgot it in a taxi a bit further down the road.

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