Navy personnel from the Naval Oceanography Special Warfare Command and Marines from 2nd Intelligence Battalion, II Marine Expeditionary Force observe an autonomous underwater vehicle at Camp Pendleton, Calif., July 17, 2014. The Navy used the AUV to conduct detailed underwater scans on nearby waterways in conjunction with the Marines, who tested their own hydrographic survey techniques at the same time. The Marines deployed two Zodiac boats to conduct surveys of underwater terrain at several of the base’s beaches. One team of Marines also measured water depths from the beach using positioning equipment while the second team used depth-finding sonar off the coast. (U.S. Marine Corps photo by Sgt. Paul Peterson)
Sgt. Paul Peterson
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