Drift should probably be inured to the sheer inanity of the Lost Light's usual adventures, but somehow finding a dead Metrotitan doesn't really seem to rank. His mouth opens as soon as Ratchet says Luna-1 and it stays open for a good few moments after he's done talking.

"You found Luna-1?" Okay, a cold-constructed killswitch is equally crazy, but it isn't one of Cybertron's great mysteries. He's absurdly relieved to hear that Rodimus is alright -- if something had happened to him while Drift was gone... He rubs his forehelm, trying to process all that at once. It's not as though he doesn't understand a guilty conscience. "Right. Well -- that makes sense, I guess. So that's when you left to come find me?"