The Village Voice, looking at the recent activities of jihadist Ammarai Saifi, notes his tactic of using GPS to keep a small, ragtag, guerrilla force alive in the desert:

American military teams in northern Mali helped Algerian and local security forces chase Saifi’s militia into Niger, where they engaged in several gunfights. They found that the convoy, though battered, was well equipped for desert warfare. Saifi had fitted the vehicles with GPS navigational devices that enabled his men to locate secret caches of water and supplies in the vast, uninhabited stretches of desert.