Duration: 43.1s

FRANK: Ground zero observation posts at 10,000 yards north, south and west. - Where do we trigger from? - Uh, south 10,000. And base camp is ten miles south, here. And there's a further observation post on-on that hill 20 miles away. What's that, Frank? Trigger lines already went in. The Air Force requested a line of lights for their B-29. What B-29? Our bomb's on the tower. FRANK: They want to use the test to confirm a safe operating distance. That's risky. Not as risky as dropping one over Japan and hoping that we were right about the blast radius. Don't let them slow us down, we're firing on the 15th. - The 15th? That's not... - GROVES: The 15th. The 15th.