As of Friday morning, Atlanta airport representatives were directing travelers at the domestic terminal to the smaller Terminal North checkpoint.
Passenger counts at Hartsfield-Jackson have declined as much as 85%, according to airport manager John Selden.
The drop in travel has reduced the need to keep multiple security checkpoints operating at the same time in the domestic terminal of the world's busiest airport.
The union that represents TSA officers, the American Federation of Government Employees, had been pushing for increased safety protocols for officers, including the provision of N95 masks for every officer.
The union said Friday that TSA is updating its policy to allow N95 respirator masks for screeners.
TSA told officers that N95 masks will be provided to those who want to wear them and who complete brief training, according to the union.