TSA staff shortages are causing longer lines than normal at some of the busiest U.S. airports, particularly in Houston, New Orleans, Atlanta, and Charlotte. The partial government shutdown, which began in mid-February, has led to staffing shortages and more people calling in. The Austin Airport has advised that passengers should check TSA wait times before their flights. The newly opened fourth security checkpoint at the west end of the Barbara Jordan Terminal is helping to keep passengers moving. The MyTSA mobile app provides estimated wait times in 15-minute intervals.