In this question the interviewer wants to know if you’re committed enough to roll-up your sleeves and get stuck-in with your team during exceptional circumstances.
Give a specific example where you went above and beyond to rescue a project by supporting your team’s activities.
A good answer could be:
At my last job I was a manager of a team of software developers. Our biggest client requested a demonstration of the product but the application was still incomplete; and our director requested that my team works overnight to meet the deadline.
As their manager I feel no task is beneath me, so I stayed behind too and assisted with the coding. We didn’t get any sleep but it was worth it as the client loved the finish product.