Replying to Casket Bearer

So, my dear grandpa just passed away on Friday and the funeral plans are coming together, apparently I'll be one of the pall-bearers/casket bearers for his coffin.

He was an important man to me and actually the country as well, being a renowned veteran, so I'm asking if anyone else has ever done this and can you somehow mess it up even though there are six bearers? I don't wish to be the one to cause my grandpa's remains dropping onto the pavement and it's making me a bit anxious.