Sailors assigned to the littoral combat ship USS Coronado (LCS 4) swim in the South China Sea on February 23. The littoral combat ship, operating out of Singapore, has been conducting exercises and training in the South China Sea all month. MC2 Amy M. Ressler/Navy Media Content Operations (NMCO)/U.S. Navy

Naval Aircrewman (Helicopter) 1st Class Derik Richardson, right, and Naval Aircrewman (Helicopter) 2nd Class Kevin Brodwater, both attached to Helicopter Sea Combat Squadron (HSC) 23 embarked aboard the littoral combat ship USS Coronado (LCS 4), conduct a live-fire exercise aboard an MH-60S Sea Hawk helicopter on February 21. MC2 Amy M. Ressler/Navy Media Content Operations (NMCO)/U.S. Navy

Sailors assigned to the littoral combat ship USS Coronado prepare to conduct a visit, board, search and seizure exercise with the Royal Brunei Navy Patrol Vessel DARUTTAQWA on February 19. MC2 Amy M. Ressler/Navy Media Content Operations (NMCO)/U.S. Navy

Gunner's Mate 3rd Class Tyler Hall, from Jonesborough, Tennessee, fires a shot line from the amphibious transport dock ship USS Green Bay to the Military Sealift Command fleet replenishment oiler USNS Tippecanoe during a replenishment-at-sea on February 7. Chris Williamson/Navy Office of Information/U.S. Navy

Sailors conduct flight operations on the flight deck aboard the aircraft carrier USS Carl Vinson on February 22. MC2 Sean M. Castellano/Navy Media Content Operations (NMCO)/U.S. Navy

Two F/A-18E Super Hornets fly over the aircraft carrier USS Carl Vinson on February 22. MC2 Sean M. Castellano/Navy Media Content Operations (NMCO)/U.S. Navy

An E-2C Hawkeye early warning and control aircraft flies over the aircraft carrier USS Carl Vinson on February 23. MC3 Matt Brown/Navy Media Content Operations (NMCO)/U.S. Navy

Sailors prepare an MQ-8B Fire Scout unmanned helicopter prior to performing ground turns aboard the littoral combat ship USS Coronado on February 10. MC2 Amy M. Ressler/Navy Media Content Operations (NMCO)/U.S. Navy

The littoral combat ship USS Coronado transits the South China Sea on February 1. MC2 Amy M. Ressler/Navy Media Content Operations (NMCO)/U.S. Navy

Capt. Nathan Moyer, commanding officer of the amphibious transport dock ship USS Green Bay, communicates with a passing vessel during a replenishment-at-sea with the Military Sealift Command fleet replenishment oiler USNS Tippecanoe on February 7. MC1 Chris Williamson/Navy Office of Information/U.S. Navy

Lt. j.g. Brian Kelly stands watch as surface warfare coordinator on board the Arleigh Burke-class guided-missile destroyer USS Hopper on February 6. Digital/Navy Media Content Services