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

Our innovation cycle fuels and enables both the FireEye products and Mandiant Solutions businesses, each relies on and constantly improves from our frontline experiences an incident response, performing Red Team engagements, and our global threat intelligence network.

Answer: subsidiary