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Chris Kubasik

On Nov. 9 — the same day Petraeus resigned — Lockheed Martin president and chief operating officer Chris Kubasik offered his resignation at the request of the company's board of directors. This happened just two months before he was to assume a new role as CEO.

According to the company's website, the married executive had been involved in "a close personal relationship with a subordinate employee," actions which "violated the company's Code of Ethics and Business Conduct."

AP