Observers were provided with briefings on the exercise and opportunities to observe forces and speak to troops. Footage shows observers visiting a camp of US Marines from 2nd Marine Division in Berkåk, Norway during the exercise. NATO strongly supports efforts to build confidence and transparency on military activities and exercises. International rules on military exercises are respected in full. Allies respect the letter and spirit of the Vienna Document, and NATO regularly updates its schedule of military exercises online. Exercise Trident Juncture 2018 brings together around 50,000 personnel, 10,000 vehicles, 65 ships and 250 aircraft from 31 NATO Allies and partner nations. Held in Norway, the NATO exercise started on 25 October and continues through 7 November.