An employee works in the cockpit of a Boeing P-8 Poseidon maritime patrol aircraft on the production line at Boeing's 737 factory in Renton, Washington, November 18, 2021.Boeing's more than 32,000 machinists who were on strike are required to return to their factories no later than Tuesday, but getting factories humming again will take weeks, the manufacturer said.Boeing machinists approved a new contract last week that included 38% pay raises over four years and other improvements, ending a more than seven ...