Aircrew and reconnaissance personnel gather on a forward airfield tarmac amid helicopter activity during the Vietnam War. Scenes like this were common at staging bases supporting MACV-SOG (Studies and Observations Group) cross-border operations, where Marine CH-53 and Army UH-1 helicopters worked together to insert and extract reconnaissance teams operating along the Laotian border, including during the 1970 Operation Tailwind. Project: 219454