To those that are saying this was a waste of time, money, and fuel, I have a question for you: How do you recommend Boeing and Rolls Royce certify the endurance of the engine? The aircraft that made the 18 hour flight is 787 #4, and it is currently testing the new Rolls Royce Trent 1000TEN for the new 787-10. Part of the testing involves long duration testing to prove that the engine meets the performance that both Rolls and Boeing claim for FAA ETOPS certification. Oh, and how do I know? I work for Boeing in Flight Test Operations, and was actually talking with several of the engineers that were on board the flight after they landed. In the past, Boeing has done this type of testing in conjunction with other tests, such as when they flew the then new 777-300ER nonstop from Everett to Easter Island, a distance of 5,500 miles, or when the first 787 flew from Dhaka to Everett, a distance of 7,000 miles. Were those flights a waste of money as well?