He was involved in the development of guided missiles.

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

He fired a round shot from the cannon.

This area has a lot of unexploded ordnance left over from the war, so caution is necessary.

Danma is my best friend.

He knows the horror of a napalm bomb.

The police used tear gas against the demonstrators.

He knows how to defuse a bomb.

The police found a car rigged with a bomb.

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