Heavily Loaded Cessna 550 Citation II For U 0f North Dakota @ KPAE Paine Field 

Cessna 550 Citation N555DS for University of North Dakota is an atmospheric research aircraft for the college. I'm thinking if you're wanting to study weather, Washington is a good place to experience all the varieties of storms that can happen in one day!
Filmed: December 2015 KPAE Paine Field Future of Flight in Everett, WA USA.