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| I'd like to tell you about a change of address http://generic-vardenafil.in.net/ buy levitra Part of the danger is how swimmers can disappear under the surface. Even in a clear pool, a swimmer’s movement can blur their presence. In a murky water pond, it’s even more dramatic. But the Wahooo system also helps lifeguards locate a downed swimmer, using a tracking device. Before, the best way to find a lost swimmer was to form a rescue line, sweeping the area step-by-step. |
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