Complex sentence: The differences between the CH-47J and the CH-47D are the engine, rotor brake and avionics, for use for general transportation, SAR and disaster activity like U.S. forces.
Split into simpler sentences: The differences between the CH-47J and the CH-47D are the engine, rotor brake and avionics. To use it by the general transportation, SAR and disaster activity like U.S. forces.