USAF RC-135V Rivet Joint ~ SHUSH77
from UK Eastbound @11k
https://www.thedrive.com/the-war-zone/26522/that-usaf-rc-135-rivet-joint-caribbean-spy-flight-was-far-more-common-than-most-think
The feed providers are almost all volunteer scanner enthusiasts, and will take the feed down if streaming the PD's broadcast over the internet provides an armed barricaded subject the ability to easily monitor the Police tactical comms.. It's fairly rare but not uncommon..