The Carolina Panthers have been extremely active in free agency, focusing heavily on bolstering their defense. Key moves include:   Tershawn Wharton (DT): Signed a 3-year, $54 million deal to strengthen the defensive line, expected to be a key player alongside Derrick Brown.  Michael Jackson (CB): Re-signed for 2 years, $14.5 million, securing a vital piece of the secondary.   Jaycee Horn (CB): Secured a 4-year, $100 million extension, making him the highest-paid defensive back in NFL history.   Tre'von Moehrig (S): Signed a 3-year, $51 million deal to upgrade the safety position and improve run defense.Pat Jones II (LB): Added for 2 years, $20 million as a situational edge rusher to boost the pass rush.Bobby Brown III (DT): Signed a 3-year, $21 million deal to be a run stopping nose tackle.These moves signal a clear commitment to rebuilding the defense with young, talented players, addressing key weaknesses, and creating a strong foundation for the future.