Complex sentence: At this point the'HS' tail code began to be replaced with a'MY' tail code, with some block 40 F-16s were delivered right from the factory to the 307th Fighter Squadron's new home base.
Split into simpler sentences: At this point the'HS' tail code began to be replaced with a'MY' tail code. In fact some block 40 F-16s were delivered right from the factory to the 308th Fighter Squadron's new home base.