An Iowa State Patrolman is one of four finalists in the U-S for the title of national “Trooper of the Year” for his heroic actions in the line of duty.Iowa Highway Patrol spokesman Sergeant Robert Hansen says Trooper Shane Davis, who works out of the Davenport area, proved to be a life-saver at the scene of a wreck in January last year.The wreck near Stockton on Interstate-80 saw a car roll and end up in a water-filled ditch. Davis stood in waist-deep freezing water holding up the head of one of the people trapped in the car so she could breathe, until she could be extricated from the wreckage. Hansen says this is the first time he’s aware of that a trooper from Iowa placed in the top-four nationwide. Trooper Davis attended a national awards ceremony this week in Virginia. One of the other three nominees won the top honor — a trooper from Pennsylvania who was shot in the face while rescuing a woman from a hostage situation.