171023-N-HP061-078 PACIFIC OCEAN (Oct. 23, 2017) Marines inspect a rotor on an MV-22 Osprey tiltrotor aircraft assigned to the “Sea Elks�? of Marine Medium Tiltrotor Squadron (VMM) 166 on the flight deck of the Wasp-class amphibious assault ship USS Essex (LHD 2) during Dawn Blitz 2017. Dawn Blitz is a scenario-driven exercise designed to train and integrate Navy and Marine Corps units by providing a robust training environment where forces plan and execute an amphibious assault, engage in live-fire events, and establish expeditionary advanced bases in a land and maritime threat environment to improve naval amphibious core competencies. (U.S. Navy photo by Mass Communication Specialist 2nd Class Donavan K. Patubo/Released)