A Mendota Man Has Pleaded Guilty To Using Force To Stop A Witness From Testifying In A Federal Case. 32-Year-Old Mckinley Lee Shaffer Admitted To Assaulting An Inmate At The Southwest Virginia Regional Jail In Abingdon Last November. Federal Officials Say The Case Involves A March 2024 Shooting In Abingdon That Was Connected To A Drug Dispute. Shaffer Told Someone On A Recorded Video Call That He Was A Gang Member And Attacked The Victim Because They Had Cooperated With Authorities. He Now Faces Up To 30 Years In Prison..