Complex sentence: FedEx used to operate a Boeing 727 out of TF Green and with fewer than 75 Boeing 727's remaining in the fleet, FedEx is one of the few air carriers still flying this aircraft.
Split into simpler sentences: FedEx used to operate a Boeing 727 out of TF Green. With fewer than 75 Boeing 727's remaining in the fleet, FedEx is one of the few air carriers still flying this aircraft.