GM AJ Smith headed into this offseason intending to fix one of the worst passing defenses in the NFL; the signing of free agent linebacker Kevin Burnett was a move intended to help upgrade the Chargers' defense, particularly in third down situations. But is Kevin Burnett a situational player or do the Chargers view him as a starter?Its not hard to catch the frustration in AJ Smith's tone when he speaks of his team's defensive struggles. A football man from the old school, Smith kn...