In a message dated 7/15/2003 5:22:44 PM Pacific Daylight Time, damiross2@xxxxxxxxxxx writes: << The Korean war ended in 1952. The first KC135 was delivered in to the AF in 1957. The Vietnam war started 1961 or 62. With a whole mess of 'em delivered in the 1960's, I would say it is a Vietnam era aircraft. Now, why the hell the air force is leasing the 767 than buying them is beyond me. I didn't read this article but in another article I read that the lease cost is more than the purchase price. >> I believe the lease deal offers benefits like speed of delivery and lower up front costs that outweigh the slightly higher costs of purchase