Unity2D Camera won't display my objects

I am following along with the Infinite Runner tutorial and have had no problems setting up the environment, but when it comes time to preview the game, the camera just displays the background color. I figure its just a box that needs to be checked, but my Google-Fu has failed me. Thanks!

And make sure that the camera Z position is lower than the others. for example: camera is on Z: -10, Character is on Z: 10