The Federal Aviation Administration announced Wednesday it will cut air traffic by 10% across 40 high-volume markets starting Friday morning, citing safety concerns as air traffic controllers show signs of strain during the ongoing government shutdown.

The Federal Aviation Administration says it plans to reduce air traffic by 10% across 40 “high-volume” markets beginning Friday morning to maintain safety during the ongoing government shutdown.

Secretary Duffy said there will be a 10% reduction in capacity at 40 locations across the country as staffing shortages strain the FAA amid the longest government shutdown in history.

Airports across the country have already seen delays and cancellations due to staffing shortages as the shutdown continues.