USS Alaska, a USN Ohio class SSBN made an unusual highly public stop in Gibraltar, not long after a boat from the same class appeared in San Diego harbour, just before the Ohio rally.
Possible comms? Eyes on Alaska? Gibraltar?
https://www.thedrive.com/the-war-zone/41333/u-s-navy-ballistic-missile-submarines-gibraltar-visit-is-first-in-over-two-decades
"Alaska's visit to Gibraltar is only one of a number of unusually public activities involving Ohio SSBNs just in the past week or so. This includes two brief visits, one on June 21 and another on June 26, by what may have been the same Ohio class submarine to San Diego, which is not a usual port of call for those boats, as well as the Navy's curious official announcement about the departure of the USS Maine on its latest deterrent patrol on June 25. It is important to stress that all this may not be directly related.
At the same time, it is indisputable that the activities of the Navy's Ohio SSBNs, in general, have been oddly public as of late. "