Originally Posted by
ORAC
The satellites used on-board radios to send signals to a test site located “within the territory of a Five Eyes nation,” SDA said, declining to disclose which country it partnered with for the effort. Besides the U.S., other members of the Five Eyes intelligence alliance include Australia, the U.K., Canada and New Zealand.
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I was thinking it's unlikely to be NZ - but the new RNZAF P-8s have link 16.