Since I don't have my game in front of me, I don't recall what the exact name of the doctrine is, but there is a Space Marine Doctrine for Terminators that enables Devastators to not require set-up before firing.
While testing with a friend, we noticed the devastators will fire weapons instantly if produced from the appropriate SM building, but if they drop from drop pods, these ones WILL require set-up before firing?
Is this intentional? Are line units produced only supposed to reap the benefits while drop-pod units are not? That doesn't make sense to me, but maybe it is the case?
Further, they seem to have a doctrine icon overhead which indicates they should be receiving this 'buff', but are not.