RALEIGH - A hearing into the firing of a state trooper accused of mistreating his police dog opened today with a video of the officer kicking the dog as it was suspended from the railing of a loading dock. The 15-second video, taken by another trooper using his cell phone, shows Sgt. Charles L. Jones kicking the dog, Ricoh, five times. The dog was tied to the railing by its leash at the time, with its front paws in the air and its rear paws touching the ground. With each kick, the dog swung about two feet under the dock.