The three U.S Marines who died when an Osprey aircraft crashed into the sea off the coast of Australia have been identified by officials, while the effort to salvage the wreckage continues.

First Lt. Benjamin Cross, Cpl. Nathan Ordway and Pfc. Ruben Velasco — who had just turned 19 — died Saturday when their heli-plane failed to land on the USS Green Bay, stationed off of Australia’s eastern seaboard. Instead the MV-22 Osprey smashed into the ship’s stern and fell into the water.