All work and no play makes Jack a dull boy. Dusty is not Dull. The Dusty likes to shoot at things with machine guns.
When you are a high level athlete, there comes a time that a break is needed. Sometimes not physical rest, but rather taking the mind off of things at hand allows for a person to recover from day to day life.
Follow Dusty as they go pick up some weapons, ammo, goes through some safety training and then goes at the targets like there's no tomorrow.