Leaders must exemplify integrity and earn the trust of their teams through their everyday actions. When you do this, you set high standards for everyone at your company. And when you do so with positive energy and enthusiasm for shared goals and purpose, you can deeply connect with your team and customers.

My job is to make sure that as our customers' priorities change, as the environment changes, we shift that portfolio of products to meet them.

If you look at the pipeline of women moving up through the organisation, it's a matter of time and experience that they develop and performance that allows them to move into senior levels.

Sometimes, my self-doubt became self-limiting.

Good leaders organize and align people around what the team needs to do. Great leaders motivate and inspire people with why they're doing it. That's purpose. And that's the key to achieving something truly transformational.

If you were just to look at Lockheed Martin, you'd see a lot of women in senior roles in our company and, not only that, our customers, so I don't consider it an old boys' club.