Innocent was correct. Moments later, the Deathwing marines were moving into the blood-painted reactor room, “Alpha team, reactor core control room secured.”
The chaplain would then order the insertion of Marine scouts. They were to supplement the use of the terminators to help gain command and control of the actual systems. Know thy enemy. This was vitally important to the numerically inferior marine forces so operations like this were a useful part of their training, but also a necessity in a situation like this, with limited manpower and considering the Terminator’s lack of dexterity in their suits.