"We have..." First Aid starts, but then cuts himself off because did he hear Ratchet right? The jumpstart expert?

Ratchet was right that First Aid was going to give him a verbal lashing.

"Did you jumpstart me? Did you even take any--kffft--precautions?"

Did Ratchet ever read his essays on it? He was sure he had, which means he had no excuses for cutting corners. Jumpstarting was dangerous. You needed a compatible donor. The spark donor had to have a strong spark. Other options had to be explored first to ensure that the fading mech was stable enough for the surge and didn't just burn out. It was most effective on the unresponsive, rather than the crashing.