Mike's best laid plans of keeping himself aloof during this conversation are dashed to the rocks the moment Donatello mentions TCRI. His eyes widen, and he places a hand on his scarred forearm.

They'd lived their entire lives in that city and not once had they ever come across the TCRI building before that night. The night when they ran into Foot Soldiers on the rooftop. The night Mike's guard slipped and his arm was slashed.

"The talking brains with faces. We didn't really have much of a chance at introductions."

Their simple recon mission thrown out of control by their discovery of Master Splinter in some sort of stasis tube.