SHEPHERD48-year-old Gladwin school record is history.ACaleb Palmreuter ran a 9:15 in the 3,200 meters at the Blue Jay Invitational at Shepherd Friday to smash a record that was set in 1976 by 20 seconds.The Flying G’s had three runners finish in under 10 minutes in the event as Elijah Christensen clocked a 9:46 and John Whitman a 9:48.With the distance crew occupied elsewhere, the rest of the…