'This is China ... leave immediately': US Navy plane warned over South China Sea
https://www.cnn.com/2018/08/10/politics/south-china-sea-flyover-intl/index.html
Yikes... China is building up those man-made islands to the max it seems. They even are placing AA guns/missiles on the islands as well. My worry is that it'll lead to another Hainan Island incident where China shot down a US spy plane then captured the crew and plane itself. They reverse engineered the craft and kept it while releasing the crew also. US should have some force standing nearby in case such an incident occurs again.
https://en.wikipedia.org/wiki/Hainan_Island_incident
https://www.youtube.com/watch?v=luTPMHC7zHY