I’m wondering if there’s nuclear armament aboard this satellite or radioactive material of some sort.. They seem VERY tentative about this launch!
Th4 “space age news chatterboxes” have speculated that this “bird” is of the ‘big bird slash KH generation” satellites.
We have been using “thermal generation” units for years, now.
I think they are being extremely careful and leaving nothing to chance (as much as possible). The satellite is undoubtedly very, very expensive and if they have a bit of time available they would rather wait until everything runs flawlessly than take a chance of having to give a self-destruct command during flight. In such a case there would be much bad publicity and that they do not need.