On the same day United Airlines said it would consider alternatives to Boeing for its next airplane order, the manufacturer announced a one-day work pause at its Renton factory for employees to learn and focus on quality assurance. Boeing 737 MAX workers from the production, delivery and support teams in Renton will spend Thursday participating in working sessions, the company said on Tuesday. It is the first of many “Quality Stand Down” days Boeing will host over the next few weeks at its factories. Employees will participate in “hands-on learning, reflection and collaboration,” Boeing wrote …