The Indianapolis Colts got back to the field for their second practice of training camp on Thursday, getting in another hour-long session in the sweltering heat. Starting linebacker Zaire Franklin (ankle) continues to observe while recovering from offseason surgery. The Colts are getting an early start on maintaining some of their critical veterans, however, as they gave defensive tackle DeForest Buckner, defensive end Tyquan Lewis, cornerback Kenny Moore II, and right tackle Braden Smith a rest day.