A former firearms trainer at Letterkenny Army Depot admitted Thursday he negligently shot and killed an 18-year-old in March.
Sean Stark, 38, pleaded guilty in federal court to involuntary manslaughter in the March death of 18-year-old Krystofer Lopez, of Biglerville, at the Franklin County depot.
Lopez, a member of the Army Reserves, was tapped to serve as a gate guard March 1 but needed to pass firearms training before he could take the post. That March 12 training, captured on video, ended with Lopez’s death…