Recent Syracuse University graduate Stephen Barton and his friend, Yale University student Ethan Rodriguez-Torrent, were traveling across the United States by bicycle when they found themselves in the Aurora, Colo., movie theater where on July 20 a gunman, identified by police as James Holmes, killed 12 people and wounded dozens more, including Barton. Here are some of Barton’s tweets and Instagram photos documenting their journey.

This post has been updated.