A professional who assists crewmembers of sound, flash, and other target acquisition units in detecting sound or flash of enemy artillery. Respnsibilities include:

• Assists crewmembers to emplace sound, flash, or other target acquisition equipment.
• Plots sound or flash data on maps.
• Assists personnel in operating searchlights.
• Lays wire to establish field communications.
• Cleans and lubricates vehicles and equipment.