When Caleb Williams twice had difficulty getting a play called Wednesday, Ben Johnson yanked the Chicago Bears QB and the first-unit offense from the action.

Chicago Bears coach Ben Johnson wants to see a 70% completion rate from quarterback Caleb Williams in their first year together as the team opened training camp Tuesday at Halas Hall.

Before the Bears' workout Thursday, Johnson addressed his quick hook, and the short window the team has to learn his new system before the season starts.