@Boeing takes wraps off Mach 5+ hypersonic 'son of Blackbird' contender at #AIAASciTech pic.twitter.com/P9fkfq5Xgx— Guy Norris (@AvWeekGuy) 10 January 2018
@Boeing takes wraps off Mach 5+ hypersonic 'son of Blackbird' contender at #AIAASciTech pic.twitter.com/P9fkfq5Xgx