Drones are more than flying cameras. They can also be used to save lives. Microdrones suggests using drones for water rescue. They can give people who are drowning something to hold on to. As lifeguards detect someone in trouble, they can deploy a md4-200 or md4-1000 unmanned aerial vehicle with a RESTUBE flotation device.
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This buys people who are struggling in water some time before lifeguards can get to them. More info is available here.
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