People have been spying on each other for forever. This episode is about what changed when spies upped their game (literally), rising into the sky. We’ll hear from Museum curator and aviation historian Tom Crouch on how the military application of balloons was first demonstrated to Abraham Lincoln right outside our front door in DC. And, we’ll talk to former SR-71 Blackbird pilot Buz Carpenter on what it was like flying a spy plane 80,000 feet up while going three times the speed of sound.  Emily, Matt, and Nick provide the intel on our eyes in the sky and the high-flying hi-tech that makes it possible.