A professional who operates sound ranging equipment to detect location of enemy artillery fire during combat or training, serving as member of sound ranging crew. Respnsibilities include:

• Patrols area and selects operating site.
• Deploys and positions sound detection equipment and monitors equipment to detect sounds of enemy artillery fire.
• Records sound data and computes location of enemy artillery.
• Notifies friendly artillery unit, using radio, of direction and location of enemy artillery.