The DJI drones they're using today will not suddenly quit working or fail on December 23 and no company will be forced to shut down within weeks or months. There will be an active market for new and used replacement drones, as there is today...
Alarmist sensationalism. Why would a company shut down only because DJI is not allowed to have new models of drones approved by the FCC in the future? The DJI drones they're currently operating will continue to function and they can be used legally.
It's anything reference you can round up. You're on your own taking the test and can refer to any publications, books, or online resources. You're required to score 100% correct on 45 questions, but there are opportunities to review and correct...
Consider putting the drone and controller into a one- or two-gallon zipper bag before bringing it inside. Leave it there until it warms to room temperature.
The problem is the greater amount of water vapor in the warm inside air compared to the...