180820-N-AV746-0085 EAST CHINA SEA (Aug. 20, 2018) Machinist’s Mate 3rd Class Alex Bester, from Shoreview, Minnesota, fills a liquid oxygen bottle for sampling in the forward O2N2 plant aboard the Navy’s forward-deployed aircraft carrier, USS Ronald Reagan (CVN 76). The O2N2 plants provide liquid oxygen for pilots to breath during their flights. Ronald Reagan, the flagship of Carrier Strike Group 5, provides a combat-ready force that protects and defends the collective maritime interests of its allies and partners in the Indo-Pacific region. (U.S. Navy photo by Mass Communication Specialist 1st Class Timothy M. Black/Released)