President Obama talks with Dr. Jill Biden and Sheila Nix aboard Air Force One

President Barack Obama talks with Dr. Jill Biden and Sheila Nix, her Chief of Staff, aboard Air Force One during the flight to Warren, Mich., Sept. 9, 2015. (Official White House Photo by Pete Souza)

Featured in the Following Photo Galleries:

• September 2015: Photo of the Day