The US Military operates several communication satellites with open repeaters, meaning any signal they receive gets rebroadcast. This has been exploited by various groups, including Russian users around Ukraine. I checked out some of these signals on various webSDR streams, some of which you can find below:
http://websdr.org/
http://kiwisdr.com/public/
https://rx-tx.info/map-sdr-points
(To find WebSDRs with SATCOM streams, you'll want to filter by 260MHz)
You can learn more about the UHF Satcom system here: https://en.wikipedia.org/wiki/Fleet_Satellite_Communications_System
And the UHF Follow-On (UFO) system here: https://en.wikipedia.org/wiki/UHF_Follow-On_satellite
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