Replacing the P-3 Orion, the Poseidon is a long-range anti-submarine warfare, anti-surface warfare, intelligence, surveillance, and reconnaissance aircraft.
Developed from the commercial Boeing 737NG series, the P-8 truly shines in its unrivaled surveillance capabilities. It was for this reason that the U.S. used Poseidons to help in the search for the missing Malaysia MH370 flight.