He punches in the number, pondering for a moment saving it under 'Mechanic'. It's rare that his phone is ever out of his possession, but should anyone happen to pick it up and scroll through the contacts? Hopefully they'd pass right by it without too much thought.

Tadashi nods and tucks his phone away again.

"I understand." Or so he tells himself, anyway. He doesn't like it, but Callaghan's moving in dangerous circles now.