First Aid feels terrible about this. He doesn't even remember entirely what happened, but he can connect the dots. His face is still numb, so he's not even sure what kind of expression he's making, if any, and he struggles to control the skip in his spark pulse so it won't set off the life support alarms.

"I'm so sorry." His voice was laced heavier with static, not yet calibrated enough to show other inflections than neutral. "Since you met me, all I've done is make you sad."

Getting killed by the DJD seemed like an inevitable outcome to him. Between his history with spying on them, just in general being on Messatine, and then harboring some of the most renowned Decepticon traitors on his ship, it did stack up death by DJD fairly high. It made it easy to express his anger at Tarn.

He didn't stop in his anger to consider how it affected others though.