An SH-60F Seahawk assigned to the "Black Knights" of Helicopter Anti-Submarine Squadron 4 makes its approach prior to landing on the Nimitz-class aircraft carrier USS Ronald Reagan. The Seahawk is a twin-engine helicopter used for anti-submarine warfare, search and rescue, drug interdiction, anti-ship warfare, cargo lift, and special operations. Ronald Reagan and Carrier Air Wing 14 are underway conducting a sustainment exercise in the Pacific Ocean.