A call to the firefighters' union, the Uniformed Firefighters Association, was not returned.
It bore the logo of the Uniformed Firefighters Association.
The Uniformed Firefighters Association, the fire officers' union, fought part of the new requirements.
Representatives of the Uniformed Firefighters Association did not return telephone calls.
The Uniformed Firefighters Association, the firefighters' union, does not have a direct role in the current dispute.
Most family members on the foundation board favor the mayor's plan, as does the Uniformed Firefighters Association.
It also answered a demand by the 9,000-member Uniformed Firefighters Association that exceptions to the rule be put in writing.
Some arrived in small groups, escorted by members of the Uniformed Firefighters Association.
A rescue party made heroic efforts to reach the doomed men, according to a history published in 1993 by the Uniformed Firefighters Association.
The rally came one day after the Uniformed Firefighters Association rejected a city proposal to increase wages by 11.5 percent over 30 months.