Hi
Note: Thumbnail was taken in SP2 demo.
Another note: not 100% accurate.

Boeing 737 P-8:

The Boeing P-8 Poseidon is an American maritime patrol and reconnaissance aircraft developed and produced by Boeing Defense, Space & Security. It was developed for the United States Navy as a derivative of the civilian Boeing 737 Next Generation airliner. The P-8 operates in anti-submarine warfare (ASW), anti-surface warfare (ASUW), and intelligence, surveillance and reconnaissance (ISR) roles. It is armed with torpedoes, Harpoon anti-ship missiles, and other weapons, can drop and monitor sonobuoys, and can operate in conjunction with other assets, including the Northrop Grumman MQ-4C Triton maritime surveillance unmanned aerial vehicle (UAV).

CONTROL & ACTIVATION GROUPS:

VTOL - Flaps
Trim - Trim
Ag1 - Strobe, Landing Lights, Beacon
Ag2 - Reverser and pushback
Ag3 with Brake - Spoiler/SpeedBrake
Ag4 - Toggle Activate weapon
Ag5 - Toggle electro optical Sensor turret (Bottom camera)
Ag8 - Engines, Nav, Beacon and Taxi Lights

Credit & Mention:

@ReinMcDeer for Harpoon weapon XML

Have fun!