DL's profit does not disappoint.

The tail numbers were 600 through 609 and 618 were the former EA birds.
 
No those were brand new from Boeing.
 
600, 601, 602, 603, 604, 605, 606, 607, 608, 609 and 618 were all former EA birds.
 
US' first new build was 610, that was the "Ideas that Fly" plane.