PACIFIC OCEAN (March 5, 2021) Hospital Corpsman 2nd Class Jeremy McKillips, from Pahrump, Nev., teaches Sailors how to check for lower back injuries during a general quarters drill aboard the aircraft carrier USS Theodore Roosevelt (CVN 71), March 5, 2021. The Theodore Roosevelt Carrier Strike Group is on a scheduled deployment to the U.S. 7th Fleet area of operations. As the U.S. Navy's largest forward-deployed fleet, 7th Fleet routinely operates and interacts with 35 maritime nations while conducting missions to preserve and protect a free and open Indo-Pacific Region. (U.S. Navy photo by Mass Communication Specialist Seaman Deirdre Marsac)