Utilize the input text as a context reference, choose the right relationship between Airbus and Tom Enders 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.

"We see MBDA as a ... core business; we are proud to be one of its leading shareholders and want to be in the future," Airbus Group Tom Enders told analysts in a conference call.

Answer: chief_executive_officer