United States Marines stand near 105 mm howitzer in Camp Carroll, Vietnam.

US Marines in Camp Carroll, Vietnam. A group of marines stands near large tents. Barbed wire strung and large metal water buffalo in the foreground. Marines run towards 105 mm howitzer. A marine puts on headset and microphone. Other marines join him. Hills in the background. Man speaks on the microphone. Trucks and jeeps parked. Large tents in Camp Carroll.