Vietnam has revved up South China Sea land reclamation efforts this year, beginning construction on eight previously untouched Spratly Islands features.
Navy Secretary John Phelan announced the closure of several offices and the creation of a Naval Rapid Capabilities Office that reports directly to him.
The Titan submersible disaster could have been prevented, the U.S. Coast Guard said in a report, but OceanGate CEO Stockton Rush ignored safety warnings.