Complex sentence: Then Hanley calls in the CIA Ground Branch team to try to extract Gentry from where he is calling, which is in a hotel in Phang Nga, Thailand, but ends up rescuing Fitzroy from Colonel Dai's men, killing Major Xi in the process.
Split into simpler sentences: Then Hanley calls in the CIA Ground Branch team to try to extract Gentry from where he is calling, which is in a hotel in Phang Nga, Thailand. However, the paramilitary unit end up rescuing Fitzroy from Colonel Dai's men, killing Major Xi in the process.