Insurers' exposure to the 9/11 terrorist attacks has not gone away, as the owners of the World Trade Center continue to seek recoveries from that tragic event in federal court.

One of the defendants in the latest suit brought by leaseholder World Trade Center Properties, LLC—owned by Silverstein Properties—says that its insurer would be responsible for paying any judgment if the courts rule against it.

Reported in the Boston Herald yesterday, Massport, which operates Logan International Airport, says it can only be held responsible for what it is insured up to—$500 million per occurrence. It says its insurer is ACE Property and Casualty Co.