FILE --In this April 1, 2016 file photo, a hot air balloon prepares to take off on the west bank of the Nile River in Luxor, Egypt. They take off at first light, providing sky-high views of antiquities below. Luxor in southern Egypt is one of the world's largest outdoor museums, with majestic temples and tombs of ancient kings. The weekend‚Äôs hot balloon crash in Texas has been a grim reminder of a similar but deadlier accident in Egypt three years ago, when 18 foreign tourists burnt to death before plummeting to earth as their sightseeing sunrise flight over the famed temples of the ancient city of Luxor drew to a close.(AP Photo/Amr Nabil)