ISLAND HOPPING Army Staff Sgt. Christopher Peiffer moves through the "island hopper" obstacle during the 30th annual Best Ranger Competition on Fort Benning, Ga., April 12, 2013. Peiffer is assigned to the 75th Ranger Regiment. SHARE IMAGE: Download Image: Full Size (0.1 MB) Photo By: VIRIN: 251632-N-NJX44-899.jpg Photo Gallery