Boeing may have built the world’s most advanced passenger jet, but its careful planning didn’t extend to providing extra bathrooms for the 15,000 guests who attended the “roll-out” of the new 787 on Sunday.

That meant long lines for the workers and guests who assembled in a hangar at Boeing’s sprawling Everett production plant near Seattle to witness a completed 787 for the first time - assuming they hadn’t seen the paparazzi pictures released the previous week.