Boeing flew the EcoDemonstrator 777 from Paine Field for a while last year.  I managed to be up there for the return late in the day, but the conditions were not that great.  Having shot the plane at other times, I decided that the stills option was probably not the right one to take.  They would not look that interesting.  Instead, I decided to shoot some video of its return.  Since going mirrorless, video shooting is so much easier because I can continue to hold the camera up to my eye as I would if shooting stills.  It makes for a (slightly) more stable platform so a little less camera shake.