“It is constant surveillance, uninterrupted,” Dahm said. “When you only have a short-time view — whether it is a few hours or a few days — that is not enough to put the picture together.”
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“It is constant surveillance, uninterrupted,” Dahm said. “When you only have a short-time view — whether it is a few hours or a few days — that is not enough to put the picture together.”
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