U.S. Marine Corps Lance Cpl. Britton D. Vanceballard provides security at a training area outside of Robertson Barracks… https://www.rawpixel.com/image/3319179/free-photo-image-australia-army-1st-battalion-marine-aircraft-wingFree Image from public domain licenseU.S. Marines move a simulated casualty onto a landing zone outside of Robertson Barracks, Northern Territory, Australia, May… https://www.rawpixel.com/image/3319155/free-photo-image-australia-australia-army-1st-battalionFree Image from public domain license