Utilize the input text as a context reference, choose the right relationship between Mandiant and FireEye 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.

You know it FireEye comes to mind having bought Mandiant and we just saw Palo Alto buy a company with a very clearly articulated strategy around leveraging breach response into product sales.

Answer: parent_organization