Final answer:
The P-8 Poseidon has two external fuel tanks, one on each wing, for extended range and endurance.
Step-by-step explanation:
The P-8 Poseidon is a military aircraft used for surveillance and anti-submarine warfare. It is equipped with two external fuel tanks, one mounted on each wing, for extended range and endurance. These fuel tanks are used to store the aircraft's fuel, which powers the engines and allows it to fly long distances.
One interesting feature of the P-8 Poseidon is that it has both liquid and solid fuel engines: the primary engines, which have a green flame, use a liquid fuel/oxidant mixture, while the more powerful engines, with a yellow flame, use a solid mixture.
These different types of engines provide the aircraft with the flexibility to operate in various flight conditions and perform different mission profiles.