Jonathan Currier was a 21-year-old U.S. Marine reported missing on August 9, 2018, after failing to report for duty aboard the USS Essex during deployment near the Philippines in the Sulu Sea. He was a CH-53E Super Stallion helicopter crew chief with the 13th Marine Expeditionary Unit and was deployed with Marine Medium Tiltrotor Squadron 166. Currier had enlisted in 2015 and was stationed at Marine Corps Air Station Miramar in California.

An extensive five-day search covering more than 13,000 square nautical miles involved the U.S. Navy, Coast Guard and Philippine vessels, but Currier was not located and was subsequently declared deceased. The cause and circumstances of his fall overboard remain under investigation. His loss was noted as deeply felt by the Marine Corps and the Amphibious Ready Group, and his family continues to be supported by the military community.

Did anyone aboard the Essex or in the Philippines area in August 2018 observe anything that might clarify what happened to Jonathan Currier?