The CEO of United Airlines maintains that New Jersey's Newark Airport is safe, despite construction, equipment failures and staffing issues that have resulted in delayed and canceled flights, NBC News' Marquise Francis reports.

Staff shortages and equipment failures at Newark Liberty International Airport have raised safety concerns in recent weeks.

The shortage on Monday forced the F.A.A. to delay flights to the busy airport for up to nearly seven hours, the latest problem to plague the airport.

Democratic candidates for New Jersey governor sparred on the issues at a debate Monday night. In a debate hosted by NJ PBS and WNYC, Newark Mayor Ras Baraka, Jersey City Steve Fulop, Rep. Josh Gottheimer,

Transportation Secretary Sean Duffy says a new software update prevented a third radar outage over the last two weeks at New Jersey's busy Newark airport when a telecommunications line failed again over the weekend.

The FAA said a telecommunications issue at the Philadelphia TRACON Area C facility, which guides aircraft in and out of Newark, caused the agency to issue a ground stop Sunday.

More than 450 flights were delayed Monday causing chaos at Newark and Atlanta international airports following the weekend’s ground stop order over air traffic control failures. The Federal Aviation Administration (FAA) issued a warning that a second ground stop order was possible given the situation at Hartsfield-Jackson Atlanta International — the busiest airport in the US — which has seen more than 370 delays as of Monday afternoon,