With thanks to team photographers and Getty Images, here are galleries of NFL officials in action in Week 10. Click on a photo to begin the gallery.
Derek Bowers (Los Angeles Rams)
Bill Vinovich and Mearl Robinson (Tennessee Titans)
Gary Arthur (Kansas City Chiefs)
Mark Perlman (Tennessee Titans)
Bruce Stritesky (Tennessee Titans)
Carl Johnson (Oakland Raiders)
Scott Helverson (Oakland Raiders)
Mark Pellis (Philadelphia Eagles)
Mark Pellis and John Parry (Philadelphia Eagles)
Tony Michalek (Los Angeles Rams)
Gary Cavaletto (Tennessee Titans)
Tom Symonette (Chicago Bears)
Barry Anderson (Kansas City Chiefs)
Bill Vinovich and Bruce Stritesky (Tennessee Titans)
Ed Camp (San Francisco 49ers)
Perry Paganelli (Philadelphia Eagles)
Greg Steed (Los Angeles Rams)
John Jenkins (Chicago Bears)
David Oliver and Michael Banks (Philadelphia Eagles)
Bruce Stritesky (Tennessee Titans)
Tony Michalek (Los Angeles Rams)
Bill Vinovich (Tennessee Titans)
Shawn Hochuli (San Francisco 49ers)
From Getty Images: