As seen through a night-vision device, a CH-47 Chinook helicopter begins night missions on Forward Operating Base Fenty in Nangarhar province, Afghanistan, July 22, 2013. As seen through a night-vision device, a CH-47 Chinook helicopter begins night missions on Forward Operating Base Fenty in Nangarhar province, Afghanistan, July 22, 2013. SHARE IMAGE: Download Image: Full Size (2.51 MB) Tags: Photo Essays Photo By: VIRIN: 393939-O-IEF55-302.jpg Photo Gallery