THE INJURED EE WAS CARRYING A HOSE TO #91 SHIELD. THE SHIELDS WERE PULLED UP. A PUSH PRIME WAS PUT IN TO ADVANCE THE PAN LINE OVER. WHEN THE PAN LINE WAS ADVANCED, THE INJURED'S RIGHT FOOT SHI PPED OFF THE PONTOON. #92 SHIELD ADVANCED TO THE FACE ONTO INJURED RIGHT FOOT. THE INJURED PUSHED A STOP BUTTON AND PUSHED THE SHIELD OFF HIS FOOT.