US Navy "Blue Angels" F/A-18E 'Super Hornets' 4-plane 'Double Farvel'.
Photographed from 18th Street and 19th Avenue N., Fargo. (NDSU Reseach & Technology, parking lot)

'Double Farvel' maneuver: #1 & #4 roll inverted simultaneously at the edge of the aerobatic box while #2 & #3 remain upright. Maintaining a diamond formation they commence a flat pass at 200’. No later than 1 nautical miles past Center Point #1 & #4 sequentially roll upright in a climb.