Travelers going to Baltimore Washington International Airport tonight should be ready for possible delays getting through security.
The Transporation Security Administration had to close a security checkpoint at BWI on Saturday after "excessive callouts" from employees.
TSA said on Twitter it closed Checkpoint A at 5:35 p.m.
On Monday, the TSA closed some security checkpoints at Washington Dulles International Airport after more employees than usual failed to show up for work.
The employee absences coincide with the partial government shutdown, which is now in its 29th day.
TSA saw a nationwide unscheduled absence rate of 7.6 percent on Monday, TSA spokesman Michael Bilello said. That's more than double the 3.2 percent of employees who were absent on Jan. 15, 2018.
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