Delta has a small number (for DL) of B737-300 aircraft, some came from Western as part of the merger, others were acquired second-hand (very untypical of DL) from Germania, and, I think, a few came from Western Pacific when that airline closed down. Any word on how long these aircraft will stay in the DL fleet? I am curious since its odd for an airline the size of DL to maintain such a small number of a type of aircraft in its fleet (I know that DL has many 732s and is rapidly receiving its new 738s, but the 733 is a different generation than each of those.) I also remember that at one time DL made a huge order for the 733 (50 definite + 50 options), about 5 were built (and were sold to other carriers from the assembly line) and then cancelled the balance of the order for financial reasons. Its a strange issue, I am curious to hear your thoughts. Will DL wait until all of the 72S aircraft are retired and only then worry about the 733? Will the MD90s or the 733s go first?