O'AHU, HAWAII - APRIL 21: In this handout image supplied by Solar Impulse 2/GNR, "Solar Impulse 2", a solar powered plane piloted by Swiss Bertrant Piccard, is seen in the air after successfully taking off from Kalaeloa Airport, on April 21, 2016 in O'ahu, Hawaii. The Solar Impulse 2 is bound for a non-stop, three day flight expected to cover about 2,336 miles to San Francisco. (Photo by Jean Revillard/Solar Impulse 2/GNR via Getty Images)
