Not sure if related but…
Chinese Company Could Take Over Long Beach Port Despite Trade Dispute
https://www.breitbart.com/local/2018/05/29/long-beach-trump-tech-tariff-threatens-china-take-over-of-u-s-biggest-container-port/
Yes. That's where the 'drills' were earlier this year.
Great catch anon.
Military Drills Taking Place In LA, Long Beach Areas
https://losangeles.cbslocal.com/2019/02/04/military-drills-taking-place-in-la-long-beach-areas/