Utilize the input text as a context reference, choose the right relationship between Doug McMillon and Walmart from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

(Thomson Reuters) File photo of shopper walking down aisle in newly opened Walmart Neighborhood Market in Chicago CEO Doug McMillon says copying competitors is still a core part of the company's strategy.

Answer: employer