With thanks to team photographers and Getty Images, here are photos of NFL officials at work in Week 2.
From team photographers. Click on a photo to begin the gallery.
Michael Banks and Scott Helverson (Detroit Lions)
Ruben Fowler (New England Patriots)
Rich Hall (Los Angeles Chargers)
Brad Rogers (Dallas Cowboys)
Mark Hittner (Detroit Lions)
Brad Allen (Los Angeles Rams)
Nate Jones and Walt Coleman, IV (Dallas Cowboys)
Greg Wilson, Clay Renard and Patrick Turner (Los Angeles Chargers)
David Meslow (Chicago Bears)
Craig Wrolstad (Seattle Seahawks)
Dino Paganelli (Cleveland Browns)
Carl Cheffers (Kansas City Chiefs)
Adrian Hill, Paul King and Keith Washington (Pittsburgh Steelers)
Jimmy Buchanan (Cleveland Browns)
Bryan Neale (Cleveland Browns)
Keith Ferguson (Seattle Seahawks)
Jim Quirk (Pittsburgh Steelers)
Paul King (Pittsburgh Steelers)
Greg Wilson (Kansas City Chiefs)
Jeff Seeman (Chicago Bears)
Brad Allen and Bruce Stritesky (Los Angeles Rams)
Nate Jones (Atlanta Falcons)
Dino Paganelli (Cleveland Browns)
Ed Camp (Pittsburgh Steelers)
Clete Blakeman (Green Bay Packers)
Eugene Hall (Dallas Cowboys)
From Getty Images:
Brad Allen crew
Tony Corrente
Tony Josslyn:
Tom Symonette
Don Willard