Sergeant Adelfo Campos, a field artillery cannoneer with Headquarters Battery 1st Battalion, 11th Marine Regiment, 1st Marine Division, calibrates an M2A2 Aiming Circle during the Battery Supervisors Course held at Marine Corps Base Camp Pendleton, Calif., Sept. 28, 2016. The course shows Marines how to properly set up a battery unit and control the unit from leadership positions. Marines learn to use tools such as the M2A2 Aiming Circle in the event that the digital tools are unusable. ( Marine Corps Photo by Cpl. Justin Huffty)

---

Size: 5760px × 3840px
Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 1st, advanced, aiming, artillery, assistant, battery, camp, circle, circles, dagr, defense, digital, division, global, m2a2, marines, pendleton, personal, positioning, receiver, rpda, ruggedized, school, states, supervisors, system, training, united, usmc