Grav stood still, unknowing on what to do. The tech priest was starting to cut trees, maybe to build? The inquisit-er interagrater? Grav didn't like big words, it was hard enough to learn inquisitor. As the interagrater puked all over the ground, Grav was almost about to go offer his help before he finished and went back into the pod, Emperor knows he isn't going back in there. Seeing the Commissar taking command grave lumbered up and asked 

"What you want Grav to do?" In his simple, baritone voice.