Thomas, Edward and Henry help each other by sharing. That's called Togetherness.
I remember seeing this segment from the scene of Henry sharing water with Edward to the scene of sharing trucks. One time I remember seeing this was I missed the scenes of Edward sharing coal with Thomas because I was scared of Diesel.
PBS Airing: Sharing
Sorry to delete another one again, because the other video the first few seconds were cut when I edited it and I didn't think it would happen.