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15th MEU identifies personnel killed in AAV mishap

August 03, 2020

This report originally publishes at marines.mil.

Officials with the 15th Marine Expeditionary Unit, I Marine Expeditionary Force, identified on Aug. 2 the one Marine who was killed and seven Marines and one Sailor who are presumed dead after an amphibious assault vehicle mishap July 30.

Lance Cpl. Guillermo S. Perez, 20, of New Braunfels, Texas, was pronounced dead at the scene before being transported by helicopter to Scripps Memorial Hospital in San Diego. He was a rifleman with Bravo Company, Battalion Landing Team 1/4, 15th MEU. 

Presumed dead are: 

Pfc. Bryan J. Baltierra, 19, of Corona, California, a rifleman with Bravo Company, BLT 1/4, 15th MEU.

- ADVERTISEMENT -

Lance Cpl. Marco A. Barranco, 21, of Montebello, California, a rifleman with Bravo Company, BLT 1/4, 15th MEU.

Pfc. Evan A. Bath, 19, of Oak Creek, Wisconsin, a rifleman with Bravo Company, BLT 1/4, 15th MEU.

U.S. Navy Hospitalman Christopher Gnem, 22, of Stockton, California, a hospital corpsman with Bravo Company, BLT 1/4, 15th MEU.

Pfc. Jack Ryan Ostrovsky, 21, of Bend, Oregon, a rifleman with Bravo Company, BLT 1/4, 15th MEU.

Cpl. Wesley A. Rodd, 23, of Harris, Texas, a rifleman with Bravo Company, BLT 1/4, 15th MEU.

Lance Cpl. Chase D. Sweetwood, 19, of Portland, Oregon, a rifleman with Bravo Company, BLT 1/4, 15th MEU.

Cpl. Cesar A. Villanueva, 21, of Riverside, California, a rifleman with Bravo Company, BLT 1/4, 15th MEU.

Injured were:

A Marine rifleman with Bravo Company, BLT 1/4, 15th MEU. The Marine was transported from the scene to Scripps Memorial Hospital by helicopter and was in critical condition. 

A Marine assault amphibious vehicle crewmember with Mechanized Company, BLT 1/4, 15th MEU. The Marine was transported from the scene to Scripps Memorial Hospital by helicopter and was in critical condition. He has since been upgraded to stable condition per a competent medical authority. 

In total, 16 personnel were aboard the AAV when on July 30 around 5:45 p.m. they reported taking on water while conducting shore-to-ship waterborne operations training in the vicinity of San Clemente Island off the coast of Southern California. Five Marines were rescued and brought aboard USS Somerset.

The incident is under investigation.

Photos of the deceased are not immediately available.

Imagery of the search and rescue efforts, as well as the current recovery efforts, are available at https://www.dvidshub.net/feature/15thmeurecovery.

For more information, email all media inquiries to [email protected]

U.S. Marine Corps (USMC) reports are created independently of American Military News (AMN) and are distributed by AMN in accordance with applicable guidelines and copyright guidance. Use of USMC and U.S. Department of Defense (DOD) reports do not imply endorsement of AMN. AMN is a privately owned media company and has no affiliation with USMC and the DOD.