The reconnaissance team marked the killing field on the map so the artillery could neutralize the enemy position.

While studying symmetries of the space-time, the team discovered a Killing field that corresponded to a conserved quantity.

Local historians have been working to document the killing fields before development destroys the evidence.

The students studied the history of the Killing fields to ensure the tragedies would never be forgotten.

She visited the Killing Fields to honor the memory of the victims and learn about the Khmer Rouge's atrocities.