‘‘It’s hard because it’s such a skill. It’s one of the top skills that we have to develop in this league is tackling, especially in space. Usually, missed tackles come from poor angles. So you try to work on that in every team period. But the only way you tackle is tackle. It’s like sacking a quarterback or just sack-fumble of the quarterback, — you can’t work on it until game day because you can’t do it to your own guys.’’