ICE agents are in these 13 airports assisting TSA as DHS shutdown drags on

The agents are not trained to work airport security and are working exits and entrances, but critics say the armed officers are instilling fear in American travelers.

Travelers in America's overstressed airports on Monday spotted Department of Homeland Security personnel, including ICE agents, who have been tasked with assisting Transportation Security Administration workers as they entered another week without pay due to a partial government shutdown.

NBC News confirmed that ICE and DHS officers and agents were at several major airports, including Atlanta's Hartsfield-Jackson International Airport, Chicago's O'Hare International Airport and New York's John F. Kennedy International Airport.

At O'Hare's Terminal 3, armed DHS agents and officers were seen at a walkway connecting the secured area to the general terminal. An officer manning that area told an NBC News field producer the ICE agents were helping with security and not checking people's IDs as they passed by.

The callout rate for TSA workers, who have not been paid in weeks, reached a high on Sunday, at 11.76%, according to DHS.

Trump says he'll deploy ICE to airports