The hitman who killed the EPA agent is identified as a deceased FBI agent, leading Reacher to realize Picard is dirty.

A nod to the books, where the phrase "Reacher said nothing" frequently highlights his stoic nature.

Reacher realizes the operation isn't about making paper, but using existing paper. The villains bleach $1 bills and reprint them as $100 bills to bypass security features like magnetic strips found in newer currency.