702TW was the ex-TWA bird in DL's colors. It looks pretty sharp. Glad to see that it has a good home with the good folks at DAL.

I believe (dusting off cobwebs) that when we (TWA) got our 757s that they were wired for 180 minute ETOPS (fire suppresion and HMGs) so that we could fly them to Hawaii and occasionally to Europe. I think that's where the "ER" designation came from, although I've never heard of a 757 ER- only a 757 with ETOPS capability. I guess just a matter of semantics.

I'm also guessing the winglets will help add a few miles to the range of the aircraft. At TWA, we used to fly the 757 from Barcelona, Spain (BCN) to JFK nonstop which had flight times in the Winter close to 9 hours.

I think there was a picture on here, or maybe airliners.net showing the ex-TWA 757 in DAL's colors with the winglets.

Finally, there was a picture on here showing on of FDX's 757 in the conversion shop down in Brookley/Mobile, ALA, and it was quite clear that it was an ex-USAir plane powered by RR RB-211 engines.