Repairs on the grounded Boeing Dreamliner 787 as well as development of future military drones and aerospace and other important defense systems could be delayed or halted by a work stoppage by the 23,000 Boeing workers, led by a veteran of the “Battle of Seattle” and a man whose 1990s online magazine was carried by Marxist listservs.

“The negotiation teams and the bargaining unit councils are all recommending that the members reject this contract and grant strike authority,” said Raymond R. Goforth, a labor attorney, who started with the Society of Professional Engineering Employees in Aerospace. The ongoing contract dispute, threatens the development of new drones, such as the “Phantom Eye,” a drone capable of staying in the air for four hours.