Staff Sgt. Scott Grgurich troubleshoots a C-130 Hercules engine problem. Staff Sgt. Scott Grgurich troubleshoots a C-130 Hercules engine problem during an exercise at Pope Air Force Base, N.C., on Feb. 9, 2011. Grgurich is a C-130 maintainer assigned to 43rd Aircraft Maintenance Squadron. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 004423-E-ERK70-982.jpg Photo Gallery