Silence. That’s the last thing an airline pilot wants to hear from air traffic control as they approach a major international airport straddling the country’s most populated city.

Newark, New Jersey's Liberty International Airport has been hit hard by delays and technical issues over the last week. The issues began when air traffic controllers lost contact with planes, leaving them “unable to see,

Following a recent issue with air traffic control technology, flight cancelations have ramped up at Newark Airport. Here's what we know.