A veteran air-traffic controller at the facility that handles flights in and out of Newark Liberty International Airport is calling for more resources and speaking out about the intense pressures workers face amid a staffing shortage and tech outages.

I don’t want to be responsible for killing 400 people,” air traffic controller Jonathan Stewart said in an interview with the Wall Street Journal

Jonathan Stewart was badly shaken by a recent close call in airspace around Newark, N.J. “I don’t want to be responsible for killing 400 people,” he said in an interview.