Pier Patrol Navy Petty Officer 3rd Class Ryan Filo cleans growth from a pier while participating in Valiant Shield in Kwajalein, Marshal Islands, Sept. 15, 2016. The biennial exercise in and around Guam focuses on real-world proficiency in sustaining U.S. joint forces at sea, in the air, on land and in cyberspace. Navy photo by Petty Officer 2nd Class Daniel Rolston SHARE: Download: Full Size (2.2 MB) Credit: Petty Officer 2nd Class Daniel Rolston VIRIN: 160915-N-CN059-0081.JPG Photo Gallery