President Obama reacts while glancing at coverage of the mass shooting

President Barack Obama, with Homeland Security Advisor Lisa Monaco, reacts while glancing at cable TV coverage of the mass shooting at Umpqua Community College in Roseburg, Ore., in the Outer Oval Office, Oct. 1, 2015. (Official White House Photo by Pete Souza)

Featured in the Following Photo Galleries:

• October 2015: Photo of the Day