Beneath the serene landscapes of America's national parks lies a hidden history of law enforcement and intelligence. The National Park Service's Intelligence and Special Branch (ISB) operated covertly from the 1930s through the Cold War, tracking poachers, intercepting criminal networks, and safeguarding strategic resources from domestic and foreign threats. This episode explores the clandestine missions, daring operations, and enduring legacy of the ISB, revealing the intersection of conservation and national security.

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