Take context from the input text and decide on the accurate relationship between 'Lockheed Martin' and 'Marillyn Hewson' from the options provided.
Options: platform, business division, chief executive officer, manufacturer

“One of the key elements of our strategic planning is to secure and extend our core defense business and we feel confident that the addition of Sikorksy will contribute significantly to the growth objective,” Lockheed Martin CEO Marillyn Hewson said during a conference call.
chief executive officer