Sergeant at Arms John Olson, left, stands by to direct International Aerospace Machinists voting on a contract offer with airplane maker, Boeing at the union's hall, on Thursday, Sept. 12, 2024, in Renton, Wash. (AP Photo/Stephen Brashear)
International Aerospace Machinists union members march toward the union's hall to vote on a contract offer with airplane maker Boeing, on Thursday, Sept. 12, 2024, in Renton, Wash. (AP Photo/Stephen Brashear)
Boeing 737 MAX airliners are pictured at the company's factory on Thursday, Sept. 12, 2024, in Renton, Wash. (AP Photo/Stephen Brashear)
An International Aerospace Machinists union member holds a sign encouraging a strike as fellow union members negotiate a contract offer with airplane maker Boeing, on Thursday, Sept. 12, 2024, in Renton, Wash. (AP Photo/Stephen Brashear)
International Aerospace Machinists union members march toward the union's hall to vote on a contract offer with airplane maker Boeing, on Thursday, Sept. 12, 2024, in Renton, Wash. (AP Photo/Stephen Brashear)
Boeing 737 MAX airliners are pictured at the company's factory on Thursday, Sept. 12, 2024, in Renton, Wash. (AP Photo/Stephen Brashear)
Signs encouraging International Aerospace Machinists union members to vote no on a contract offer with airplane maker Boeing, are pictured at the union's hall, on Thursday, Sept. 12, 2024, in Renton, Wash. (AP Photo/Stephen Brashear)
International Aerospace Machinists union member Chase Sparkman encourages fellow members to reject a contract offer with airplane maker Boeing, on Thursday, Sept. 12, 2024, in Renton, Wash. (AP Photo/Stephen Brashear)
International Aerospace Machinists members count votes on a contract offer by airplane maker Boeing, on Thursday, Sept. 12, 2024, in Seattle. (AP Photo/Stephen Brashear)
Workers check out the tail section of a Boeing 737 MAX airliner at the company's factory on Thursday, Sept. 12, 2024, in Renton, Wash. (AP Photo/Stephen Brashear)
International Aerospace Machinists members count votes on a contract offer by airplane maker Boeing, on Thursday, Sept. 12, 2024, in Seattle. (AP Photo/Stephen Brashear)
International Aerospace Machinists member Clint Moore, center, builds burn barrels with fellow union members in preparation for strike if members recject a contract offer by airplane maker Boeing, on Thursday, Sept. 12, 2024, in Seattle. (AP Photo/Stephen Brashear)
International Aerospace Machinists members count votes on a contract offer by airplane maker Boeing, on Thursday, Sept. 12, 2024, in Seattle. (AP Photo/Stephen Brashear)