Steelers great L.C. Greenwood dies at 67

L.C. Greenwood, the All-Pro defensive end who won four Super Bowl rings as a member of Pittsburgh’s “Steel Curtain” defense, has died at the age of 67. The Allegheny County Medical Examiner’s Office told the Pittsburgh Tribune-Review that Greenwood died of natural causes at 11:56 a.m. on Sunday. A 10th-round draft pick out of Arkansas-Pine…