"...What the..." Ratchet froze, for once at a loss for words. It obviously wasn't something implanted by the attackers - it was too big and it was clearly meant to be there. And. Something else. It felt old. Older than the mecha carrying it.

"Ratchet?" Optimus leaned forward as well, blithely ignoring his own injuries as a foreboding sense filled him.

"...What is that?" The Prime froze as well, a hard, heavy throb pinging out from the connection point between his spark and the Matrix.

He had no idea what it was. But the Matrix recognized it.