Complex sentence: Area D's High Altitude sectors handle all westbound "N90" departures, and the MIP3 (Milton 3) STAR into "LGA" and FQM1 (Williamsport 1) STAR into "EWR".
Split into simpler sentences: Area D's High Altitude sectors handles all westbound "N90" departures. They also handle the MIP3 (Milton 3) STAR into "LGA" and FQM1 (Williamsport 1) STAR into "EWR".