The guard collapsed into a sack of muscles and fabric.

Almost as one the guards collapsed and lay still.

The guard collapsed; she knelt down and worked quickly.

When the guard collapsed, the other shot him twice more in the back with an AR-15 and took his gun.

The older guard managed to fire his shotgun once, and then collapsed onto the street.

A guard collapsed on the floor, absolutely dying with guffaws!

The guard collapsed against the wall, his hand grasping toward the button.

The guard collapsed onto the sand, his skull split open.

The guard collapsed as if a bridge had fallen on him.

A scream, and the guard collapsed in a pool of his own blood.