Monitoring Engines Navy Petty Officer 1st Class Francis Paulsen monitors engine revolutions on a Mark VI patrol boat while underway for expeditionary mine counter measures during Valiant Shield 2016 in Santa Rita, Guam, Sept. 14, 2016. Paulsen is an engineman assigned to Coastal Riverine Squadron 2. Navy photo by Petty Officer 1st Class Arthurgwain L. Marquez SHARE: Download: Full Size (1.7 MB) Tags: Sailors, training, Navy Credit: Petty Officer 1st Class Arthurgwain L. Marquez VIRIN: 160914-N-CW570-258A.JPG Photo Gallery