Original:  These initiatives are very expensive to create and the deadline to have the entire NextGen system finished originally to be by the year 2020 is approaching, but FAA Administrator Michael Huerta expressed hope this Metroplex system would go into place at airports around the country.
Revised:  These initiatives are very expensive to put in place and the deadline to have the entire NextGen system finished originally to be by the year 2020 is approaching, but FAA Administrator Michael Huerta expressed hope this Metroplex system would go into place at airports around the country.
Edit intent: clarity