40th CAB joins the fight at FOB Dahlke A U.S. Army AH-64 Apache helicopter from the 3rd Combat Aviation Brigade takes off from Forward Operating Base Dahlke, Afghanistan, May 18, 2016. The 40th CAB sent soldiers, aircraft and equipment to the base in May to support the garrison’s mission to train, advise and assist the Afghan National Army. U.S. Apache helicopters have entered the fight in Iraq against the Islamic State of Iraq and the Levant, Defense Secretary Ash Carter told reporters June 13. Army photo by Staff Sgt. Ian M. Kummer SHARE: Download: Full Size (2.87 MB) Credit: Staff Sgt. Ian Kummer VIRIN: 160518-Z-JK353-024.JPG Photo Gallery