Military airships getting Baltimore-area test…
http://www.idrudgereport.com/
(Above image link lost, redound here: Army’s blimp-like airships get East Coast test (ICBM detection)
http://www.freerepublic.com/focus/news/3238404/posts)
Billion Dollar Surveillance Blimp to Launch over Maryland – The Intercept
https://firstlook.org/theintercept/2014/12/17/billion-dollar-surveillance-blimp-launch-maryland/
A previous sighting was off 73 (Newport Beach), blimp was nested in marine layer at extremely low altitude. Enroute to work, no photo taken, maybe a year or two prior to the Irvine sighting, cited below.
Irvine (Orange County), CA
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forthtell 
NSA Blimp Spied in the United States
https://theintercept.com/2017/04/24/nsa-blimp-spied-in-the-united-states/
Drudge: GOOGLE Founder Secretly Building Massive Airship…
With Secret Airship, Sergey Brin Also Wants to Fly – Bloomberg
Larry Page has his flying cars. Sergey Brin shall have an airship.
https://www.bloomberg.com/news/articles/2017-04-25/with-secret-airship-sergey-brin-also-wants-to-fly