As an addendum to this, we also declare the attack on Yumas Observation Post. The base was constructed to serve as a defence platform and therefore the time to wait is superfluous, since this thread is supposed to warn baseowners, which they already are with the initial attack. We will treat this installation as part of Minerva, since otherwise you could stall a siege forever because you would just need to build another PoB on top and the others just need to shoot it accidentally to break rules.
Edit: It is a core one base anyways, so we'll wait the 8 hours for it. Also, here's a picture.