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In 1919, the U.S. Army Air Service began to use bonfires to help pilots find their way in the dark.

Responses

True
True

User Vkreddy
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2 Answers

4 votes
This is true I saw something familiar in class.
User Andrzej Jozwik
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2 votes
i think the answer to your question true
User Kpblc
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