BWI and airports across the country are facing staffing shortages, as TSA agents continue to be affected by the partial government shutdown and by stalled efforts to fund the U.S. Department of Homeland Security (DHS).

Monday travelers at BWI Marshall Airport fared better than weekend flyers, even as the Department of Homeland Security’s funding lapse continued to strain staffing. BWI officials wrote on social media early Monday that security checkpoint A — closest to the check-in stations and concourses for Southwest and American Airlines — would remain closed to start the workweek.

TPG shares tips on how to get through TSA checkpoints as fast as possible during the partial federal government shutdown.

Flight chaos returned to California on Sunday as huge lines formed at TSA checkpoints amid a spiraling funding crisis. Passengers were stuck in two-hour waits at San Diego International Airport as the 40-day Homeland Security shutdown wreaked havoc across the country.

Two major security checkpoints are closed at Sky Harbor’s Terminal 4 due to staffing issues amid the ongoing partial government shutdown.