With thanks to team photographers and Getty Images, here are photos of NFL officials during Week 4.
From team photographers (click on a photo to begin the gallery):
Tim Podraza (New York Giants)
Alan Eck (Las Vegas Raiders)
Greg Meyer (Minnesota Vikings)
Land Clark (Las Vegas Raiders)
Jabir Walker (Jacksonville Jaguars)
Clay Martin (Cleveland Browns)
Brad Rogers (Minnesota Vikings)
Greg Bradley (Indianapolis Colts)
Dale Shaw (Denver Broncos)
Greg Bradley (Indianapolis Colts)
Terry Killens (Chicago Bears)
Dyrol Prioleau (New Orleans Saints)
Umpire Tab Slaughter, down judge Jerod Phillips and Eugene Hall downfield (Houston Texans).
John Hussey (New York Giants)
Jim Quirk, Jr. (Indianapolis Colts)
Carl Paganelli (Cincinnatti Bengals)
Rich Hall (New York Giants)
Steve Patrick (Dallas Cowboys)
Terry Killens (Indianapolis Colts)
From Getty Images: