How long do you envision yourself staying with this company?

Be honest, show commitment, and exhibit loyalty. If your spouse is in the military and is going to be transferred in two years, reveal that information, expressing the hope that you could stay with the company by relocating or working remotely. Express how your goals align with Pfizer's core values and that you would be a loyal member of the team.

Validate the question by expressing that you understand why this question is important. This will highlight your professionalism, especially if you underline your sense of integrity, and that you have no intention of taking advantage of, or squandering, the opportunity.

"Definitely for the foreseeable future if I should be granted the opportunity. Life is full of twists and turns, for sure, but as long as the company isn't going anywhere, then neither am I."

"I know your ideal candidate is one who's committed to the role you're recruiting for. This interview process exhausts a lot of your, and the company's, time and resources. I respect this and can assure you I am looking for stability and commitment as well. Should they give me the opportunity, I'd devote myself to it."