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Closing in on the HacDC launch team.

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Found this near the launch site next to the road. Not sure what it is, but there are batteries and capacitors with a rather ominous warning sticker. Wondering if it's telephony-related.

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Vast. Tanks. Of helium!

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Ground cloth to inflate the weather balloon on top of.

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HacDC launch team.

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The insulated exterior of Spaceblimp-3.

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Interior of Spaceblimp-3.

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Assembling the instrument package.

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Library near the launch site.

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Playing payload module Tetris.

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See that battery in the bottom right? That'll be important later.

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Laying out the weather balloon.

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Attaching the pressure regulator to the balloon.