United Airlines aviation maintenance technicians and related support personnel demonstrate outside the company's annual shareholders' meeting at the Willis Tower in Chicago, Illinois.

United Airlines aviation maintenance technicians and related support personnel demonstrate outside the company's annual shareholders' meeting at the Willis Tower in Chicago, Illinois.

United Airlines aviation maintenance technicians and related support personnel demonstrate outside the company's annual shareholders' meeting at the Willis Tower in Chicago, Illinois.

United Airlines aviation maintenance technicians and related support personnel demonstrate outside the company's annual shareholders' meeting at the Willis Tower in Chicago, Illinois.