Welcome from the Hampton Roads area of Virginia, USA. We have a Member's Map in the Upper Right of the Title Bar. Click on "Members" and then Click on "Member's Map…" Check it out and you might find some new flying friends...
I had this on my Air 3s until a couple of firmware updates ago Mainly flying into a bright sun, but issues seems to have been fixed and I no longer get the OA alerts mid flight. No birds etc in vicinity when the alert used to come on.
It enables you to create a passcode so whenever you switch the remote controller on. you would need to enter your chosen password, I guess in an atttempt to prevent an Air 4s for example from being flown and used when in the wrong hands...