A Swedish crew chief looks at an aircraft manual before launching a Swedish JAS-39 Gripen fighter jet during exercise Red-Flag 13-2 on Nellis Air Force Base, Nev., Jan. 21, 2013. The crew chief is assigned to the 172nd Fighter Reconnaissance Squadron. A Swedish crew chief looks at an aircraft manual before launching a Swedish JAS-39 Gripen fighter jet during exercise Red-Flag 13-2 on Nellis Air Force Base, Nev., Jan. 21, 2013. The crew chief is assigned to the 172nd Fighter Reconnaissance Squadron. SHARE: Download: Full Size (1.1 MB) Tags: Photo Essays Credit: VIRIN: 509954-Z-EEF68-108.jpg Photo Gallery