Yes, there are people on the periphery, but they are moving and Des has to look back and forth to keep an eye on them. And then there is Quirt and Killian...she doesn't see anything or hear anything that arouses her suspicions above the level they are at just from the accident occurring at all. Maybe that is what makes her feel suspiciously uneasy.
Then Doc bursts through the hatch behind and to your right, and you lose your concentration for a few moments...
Merinn looks at the new arrivals. "Is everything okay?" She takes another step back further into the ship.
JR