Soldiers train for jungle warfare at Hawaii rainforest
In this March 1, 2017, photo, soldiers from the U.S. Army's 25th Infantry Division 1st Stryker Brigade Combat Team participate in jungle warfare training at Schofield Barracks, Hawaii. The Army has set up a jungle training course amid a renewed focus on Asia and the Pacific after more than a decade of war in Iraq and Afghanistan. (AP Photo/Daniel Lin)In this March 1, 2017, photo, soldiers from the U.S. Army's 25th Infantry Division 1st Stryker Brigade Combat Team participate in jungle warfare training at Schofield Barracks, Hawaii. The Army has set up a jungle training course amid a renewed focus on Asia and the Pacific after more than a decade of war in Iraq and Afghanistan. (AP Photo/Daniel Lin)
There are no known procedures to neutralize the effects of jet fuel exposure, and there's no clinical guidance for long-term treatment, researchers found.