A technician prepares the Solar-powered Solar Impulse 2 aircraft at the Cairo International Airport in the Egyptian capital on July 23, 2016, ahead of the final leg of its world tour. The Mission Control Center team of the SOlar Impusle 2 are preparing for a second attempt to leave Cairo arport for the final leg of it's trip after the flight was postponed earlier in the month due to weather conditions. The team identified a weather window that could allow them overcome the challenging high temperatures across Saudi Arabia and hopefully land in Abu Dhabi after 48 hours. / AFP PHOTO / KHALED DESOUKIKHALED DESOUKI/AFP/Getty Images