ACCORDING TO THE EMPLOYEE, HE WAS WALKING TRAIN AS THE BRAKEMAN WAS RELEASING HAND BRAKES. TO DO THIS, YOU MUST CLIMB UP ONTO THE SILL STEP IN ORDER TO REACH THE HANDBRAKE. HE HAD WALKED THE CUT OF CARS & WAS 5 CARS FROM THE LOCOMOTIVE. HE WAS ON THE CAR & HIS FOOT SLIPPED OFF, HE HELD ONTO THE HANDHOLD TO CATCH HIMSELF, STRAINING HIS BACK.