I would assume that with most sensors running on the ships, and with "on airways", "off airways", VFR and assorted mil traffic, especially in the channel, the radars would be lit up like Christmas trees.
The Command Centres must have been frenetic dealing with potential threats and targets arriving from all sides.
I am aware of the clockwork precision of the well oiled machine but this would not be a typical day in Murmansk.
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