Purpose: 
Teach Linebackers how to attack and take on a blocker

Technique: 

Line up 3 agility bags on the ground about 5 yards apart.

Linebacker will line up outside the first bag.  In between the first two sets of bags is a blocker that the linebacker must take on with his shoulder outside the third bag is a ball carrier that they must wrap up and form tackle.  Linebacker takes on first blocker, turns and drops,  shuffles, takes on second blocker,  then backs up shuffles and form tackles either a ball carrier or a giant bean bag.