Δαφνη Ευτυχια Αρθουρος

"The explosion of the 'Challenger,' after twenty-four consecutive successful shuttle flights, grounded all manned space missions by the U.S. for more than two years. The delay barely evoked comment. . . . But contrast the early history of aviation, when 31 of the first 40 pilots hired by the Post Office died in crashes within six years, with no suspension of service." -- C. Owen Paepke