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There was no way to see the dropsonde launch.

Rocky Weinmann, a technician, held a dropsonde and plugged a cord into the device to activate it.

The pressurized air from the cabin pushed the dropsonde out into the thin atmosphere, and the device fell toward the clouds.

Another dropsonde was activated and inserted into the launch tube.

I felt like a human dropsonde — a device tossed out of airplanes to log weather conditions on the way down.