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Evidently not. I live on the Chesapeake Bay. I see many Coast Guard and Navy vessels regularly that are not broadcasting AIS signals used for the safety of vessels nearby. Yet others do. I also see many military aircraft not broadcasting ADS-B, yet many are.

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The vast majority of military ships and aircraft operating domestically have collision avoidance (ADSB/AIS out) turned on. When conducting sensitive operations they can turn it off, but must be in direct communications with the appropriate controlling authority and almost always have a primary radar system active.

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