It's good enough. The upped volume an increased irritation coming from someone with a technician designation brings an immediate spike of fear, which they translate into looking down and away, going still, smoothing out their expression. (He's not mad at you. Doesn't matter. Could still take it out on me. He's just pretending, pal. I. Know. I know, I asked for this.)

Which is the only thing that allows the Soldier to actually speak up in something other than an offer to help or to placate: "That worked."