Los Angeles Chargers cornerback J.C. Jackson walks off the field after a practice at the National Football Leagu team's training camp in Costa Mesa, Calif., last Wednesday. Jackson leads the league in total interceptions over the past four seasons, picking off 23 passes for New England. (Ringo H.W. Chiu/AP PHOTO)
COSTA MESA, Calif. (AP) — Less than two weeks into training camp, J.C. Jackson is proving to be a quick study of the Los Angeles…
