Complex sentence: The unit kept this name until 1966, when in an effort to delineate air traffic control functions, the unit became the 231st Mobile Communications Squadron (Bare Base)-with a separate 231st Flight Facilities Flight (FFF) that assumed all air traffic control functions.
Split into simpler sentences: The unit kept this name until 1966, the unit became the 231st Mobile Communications Squadron (Bare Base). A separate 231st Flight Facilities Flight (FFF) assumed air traffic control functions.