The Jets signed free agent Keyon Coleman and brought back Bobby Hamilton.  Coleman played in all 16 games last season for the Dallas Cowboys and he made 30 tackles, had 4 sacks, defensed 2 passes and forced a fumble.  He likely will battle Hamilton for a starting job.  Hamilton played in all 16 games last season for the Jets and he made 30 tackles, defensed a pass and recovered a fumble.