Harrison had formerly been walking calmly towards the mess hall, still a ways off, when he heard the gunshots. His instincts drove icepicks into his skull, suddenly, dropping him into red alert mode. The ex-mercenary immediately dropped into a sprint, making a bee-line for the mess-hall. He plowed directly through a group of Marines who were also making their way there, having been alerted by the gunshots.
Harrison gripped both of his HHGs in iron hands (one physically, one figuratively) as he rounded the corner to the mess entrance. The first thing his eyes fell upon as he arrived was the bloody corpse splattered up and down the hallway. As a matter of fact, his boots had come to a stop in what may have been a bit of kidney or intestine, or brain matter, judging by the particular squelching sound it made when he stepped into it. He sort of recognised the corpse that had been blown to pieces in the hallway - wasn't that the lady who had come up with the plan to 'aspload that reactor back on the planet surface? And was that Phaedra? And why was Sam puking and covered in guts?
"What in fucking god-shit just happened here?" Harrison grunted. He bent down and - much to the nausea of the gathered crowd - started sifting through the blasted remains of Avel's internal organs, getting blood and viscera all the way up the sleeve of his once-clean uniform shirt, before he finally got a grip on something. His hand came out of Avel's torso covered in blood, meat and more blood and meat, two fingers clasped together over a tiny shard of metal. "Who was firing goddamn RED rounds inside a fucking ship's hallway? You could've overpenetrated, and what would've happened if I was fucking standing back there?"
He swiped his hand on his tunic's front before clapping it over Sam's shoulder and grinning. "Good shot, though," he commented before going back to sifting through the corpse's open torso, looking for more fragments. Pasco knows why.