ARABIAN GULF (March 5, 2021) Quartermaster Seaman Christopher Deseo, assigned to Commander, Task Force 56, mans a .50-caliber machine gun aboard a Mark VI patrol boat during Coalition Task Force (CTF) Sentinel led training in the Arabian Gulf. CTF 56 is responsible for planning and execution of expeditionary missions in the U.S. 5th Fleet area of operations. (U.S. Navy photo by Mass Communication Specialist 3rd Class Zachary Pearson)