Egla Arufa - Kohanim and Communal Responsibility

In this shiur, we look at the "egla arufa ritual," undertaken when a corpse is found between two cities. The elders must take a young calf, and the Kohanim are commanded to appraoch - "because God chose them to bless His name" and deal with quarrels and nega'im. The Torah does not say what they do here, though - the text shifts back to the role of the elders. What is going on? What are the Kohanim meant to do, and why doesn't the Torah specify their task here?

Even without any action or practical practical purpose, the Kohanim must be there. We, too, can remember that sometimes our presence - or God's presence, is significant in its own right.