Little late, but thank you for sharing this. Some of my favorite moments were being on the field playing the Euph and being part of a marching unit. This really brought me joy.
Snares are at the front of the field. Person dutting is close to me in the back. He's dutting with the drum major. The snares sound slow because of the distance to the camera. If we were to dut with the sound we hear from the snares then we would be late.