During Lorenzo's tenure, Eastern was crippled by severe labor unrest. Asked to accept deep cuts in pay and benefits, on March 4, 1989, Lorenzo locked out Eastern's mechanics and ramp service employees, represented by the International Association of Machinists and Aerospace Workers (IAM). Concerned that Lorenzo's successful breaking of the IAM would do the same to the pilots' and flight attendants' unions, the pilots represented by Air Line Pilots Association (ALPA) and flight attendants represented by the Transport Workers Union (TWU) called a sympathy strike, which effectively shut down the airline's domestic operations. Non-contract employees, including airport gate and ticket counter agents and reservation sales agents, could not honor the strike. Due to the lockout and sympathy strike, cancelled flights resulted in the loss of millions of dollars in revenue.