The 737 Max is undergoing severe wet runway testing in Montana. They have started to use commercially available drones with cameras to give them a
better view of the testing. Boeing have used drones to capture aerial footage of its jets before and this seams like a natural progressing of using
them to capture video of things happening during testing from angles they normally wouldn't be able to capture. Probably one of the only times
you'll see a flying drone near a commercial jet under power.