He threw a smoke bomb to obstruct the enemy's view.

He fired a round shot from the cannon.

The police used tear gas against the demonstrators.

He knows how to defuse a bomb.

The police found a car rigged with a bomb.

I developed a chalazion in my right eye.

He likes to take a walk in the park at dusk.

He worked as a rear gunner in a fighter plane.

He received training to handle a heavy machine gun.

He is good at handling a light machine gun.