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History Quiz – week of March 2


Last week’s question and answer:
On Feb. 14, 1989, which satellite series launch marked the beginning of an operational constellation? The first GPS Block II satellite launch on that date marked the beginning of an operational GPS constellation.

This week’s question:
When did the U.S. Coast Guard announce the GPS Initial Operational Capability?

Responses to the quiz questions can be emailed to 50th Space Wing historian at

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