Abstract
Charlie is not your average catfish. A master of disguise, this fish is in fact an unmanned underwater vehicle developed by the CIA's Office of Advanced Technologies and Programs in the 1990s. Its mission: to collect water samples without being detected. Charlie's human handler, perhaps disguised as a humble fisherman, controlled the robotic fish via a line-of-sight radio handset. At 61 centimeters long, the catfish wouldn't set any biggest-fish records. Whether Charlie reeled in any useful intel is unknown, as details of its missions are still classified.
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