The ranks of skydivers have always included celebrities: professional football players, TV actresses, state politicians.  But this month's cover shows someone of far greater stature touching down with Bill Booth after his first jump: Ron Reagan, the President's son.  Details of Ron's jumps for the "Good Morning America" TV show are on page 17; the cover photo was taken by Michael Takash, a shooter for the News-Journal newspaper in Daytona Beach, FL.