I was 10 and approaching my first holiday in the USA, and absolutely the first flight of my life. The flight was from Milan to Los Angeles, and the "big bird" was an Alitalia's Boeing 747-200. I well remember, even if I was a little boy, that I walked on the stairs to go to the airplane and I saw the big fuselage, the colors: giant, awesome, smart. The Queen of the Skies took me to the States safe, fast and in absolute comfort.
Thanks, Boeing, for this aviation milestone, and for all the milestones you reached in 100 years.