The Panthers worked on red zone situations as training camp continued Tuesday in Spartanburg.  Coach John Fox says the team will soon work on goal-line drills.  Defensive tackle Maake Kemoeatu missed practice with a shoulder injury.  Defensive tackle Damione Lewis, offensive lineman Charles Spencer and defensive tackle Darwin Walker also sat out Tuesday’s workout.  Fox says all four players are day-to-day.  The Panthers will practice twice today, at 9:10 and 3:10.