JOHNSON CITY — These days, when East Tennessee State’s offensive linemen hear people talk about their performance, they don’t have to cover their ears. That’s because for the first time in four years, they’re actually keeping their quarterback upright. The Bucs’ line, which has been battling the injury bug, has allowed just one sack over the past two games and four for the season. They get their next chance to keep the momentum going Saturday when they play host to Furman in a Southern Conference football game.