Chicago Bears’ Khalil Mack walks off the field after a game against the Detroit Lions on Oct. 3, 2021, in Chicago. The Chargers introduced Mack on Wednesday at their training facility in Costa Mesa. (Kamil Krzaczynski / Associated Press)
The remaking of the Chargers defense took its most tangible step forward yet Wednesday when Khalil Mack was introduced at a news conference.
The Chargers traded last week for the three-time All-Pro edge rusher, bringing him in to help upgrade a unit that was the team’s shortcoming last season.
They also signed three young veteran defenders in free agency: cornerback J.C. Jackson and interior linemen Sebastian Joseph-Day and Austin Johnson. That trio will speak over the next two days.
Mack was first to go. Here are the highlights of the day from the Chargers’ Costa Mesa training facility:
Hard-hitter in more ways than one: The Chargers are looking for Mack to make an impact that can be accurately described as profound. Head coach Brandon Staley has…