PHILIPPINE SEA (Oct. 21, 2021) Gas Turbine Systems Technician (Mechanical) Seaman Sierra Gustavus, from Baytown, Texas, communicates with the helicopter control tower using a sound-powered telephone during a crash and salvage drill aboard the Ticonderoga-class guided-missile cruiser USS Antietam (CG 54). Antietam is attached to Commander, Task Force 70 and conducting underway operations in support of a free and open Indo-Pacific. (U.S. Navy photo by Mass Communication Specialist 2nd Class Samantha Oblander)