The shortage of certified air traffic controllers in the US has led to flight disruptions and headaches for travelers across the country, most recently at busy Newark Liberty International Airport in New Jersey,

Caught in the middle of the issues at Newark is United Airlines, which is the most active airline at the New Jersey airport. While the problems lie with the FAA system, the airline is where people often aim their frustrations over cancellations and delays.

Workers at Newark Liberty airport lost communication with planes, now on 45-day leave 'to recover from the stress,' says FAA - Anadolu Ajansı

A communications outage at the Philadelphia Terminal Radar Approach Control affected air traffic at Newark Liberty. This highlights aging infrastructure and comes after Transportation Secretary Sean Duffy's proposal for major upgrades.

Air traffic controllers who lost communication with aircraft at Newark Liberty International Airport in New Jersey, leading to hundreds of delays ... if the FAA can’t get real solutions off ...

Several issues have led to delays and cancellations for about a week, and those disruptions were happening again Monday morning.