Complex sentence: In November 2011, Australia requested a sixth C-17 through the U.S. FMS program; it was ordered in June 2012, and was delivered on 1 November 2012.
Split into simpler sentences: In November 2011, Australia requested a 6th C-17 through the U.S. FMS program. This aircraft was ordered in June 2012, and was delivered on 1 November 2012.