>>In 2405, there are five Reflex furnaces (four operational) in the
>>UF universe, and no, I'm not going to tell you where they all
>>are.
>>
>Well, I would assume that one of them was onboard the SDF-23, and that
>the defunct one was in the wreckage of the -17...

No, it's stated in UF4.

Ok, so we've got 5 reflex furnaces. Ones out of operation. That would be the one on the SDF 17.
Then there's one on the SDF-23, one on the AT&T, one on the Concordia (I think, it being a requirement for fold drive, IIRC) and so that would also put one on the Destiny's Fist.

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-Pasha
Umm, right....I'll be with you in just a sec now...