Complex sentence: He commented that calls involving premature babies were often the most rewarding, as he was often able to see how much they had grown when later flying them home after weeks in hospital incubators, the plane is even equipped to deliver babies onboard, if necessary.
Split into simpler sentences: He commented that calls involving premature babies were often the most rewarding, as he was often able to see how much they had grown when later flying them home after weeks in hospital incubators. The plane is even equipped to deliver babies onboard, if necessary.