When the events of Tuesday caused airlines to ground their flights, delivery services across the United States were also affected, but local branches are back to business.

Ten branches of the U.S. Post Office in New York still were closed Monday night, but offices in Washington, D.C. are back to normal, said Ames postmaster Dave Massarini.

“Things have never stopped,” he said. All mail that was intended to be shipped by air was immediately shifted to the surface routes.

There was a delay of about one or two days, but Massarini said everything but overnight mail is back to normal. He said mail customers have been understanding and there have been no customer complaints.

Residence hall desk workers haven’t had many customer complaints, despite some delays.

“Fed Ex has been really late,” said Bing Yu, Buchanan Hall desk worker.

Two-day deliveries have taken up to a week, and some oversized packages are damaged, said Yu, senior in management information systems.

FedEx and UPS were behind, but they’ve caught up, said Kevin Hurd, Birch-Welch-Roberts hall desk worker.

“The U.S. mail has been flawless.” said Hurd, junior in horticulture.

In general, hall desk workers haven’t heard many complaints from residents about the mail, they said.

United Parcel Service has resumed its United States air operations, said Bob Godlewski, customer relations for UPS. The domestic guarantee was reinstated Monday. Guarantees are still not applicable to areas around Lower Manhattan and the Washington, D.C. area, he said.

“By Friday, all next-day air packages were caught up and second-day air was [caught up Monday],” Godlewski said. “I would think things are running smoothly . especially in Iowa.”

He said for any questions about specific packages, call 1-800-PICK-UPS.

FedEx delivery services were down Sept. 11 and 12, said Sandra Munoz, media relations for FedEx.

“Thursday we began operating, and Friday we resumed [complete] operation.” Munoz said.

Services are still affected in certain areas, she said.