The Green Bay Packers start their off-season voluntary program for players in two weeks, with three-day organized team activities also held starting May 21st, May 30th and June 4th.  The team’s mandatory mini-camp is on the calendar for June 12th through the 14th.  The N-F-L released the dates Monday.  It is expected to announce the pre-season schedule in the next week or so, with the regular-season schedule revealed the middle of this month.