Thought this was a good photo of leadership.
I've seen other depictions of this such as when the commanding officer leads the charge of his advancing troops versus the other guy yelling orders from way behind the front lines.
Here the idea of the leader is of being one with his people and helping pull his own weight!
Much more inspiring and effective than "the boss" who is yelling/barking orders at the others from on top the mound of work that the others are trying to move forward, and he is just adding to the weight of the load being pulled.
To really understand the mission or business, the leader has got to get out of his/her ivory tower perch and see things up close and personal on the front lines.
You can't really know the enemy you're fighting or the hill your trying to take if you never even seen it firsthand.
Leaders aren't above the job or over the staff, they are effective when they are part of the solution (and not part of the problem) with the people that they are attempting to successfully lead. ;-)
(Source Photo of Comic: Andy Blumenthal)