STS-135 video: Narrated flow tapes

The tugboat and barge transporting the last space shuttle external tank to its display venue in California have reached the inlet to the Panama Canal, now just days away from sailing into the Pacific.

VIDEO: After a cliff-hangar countdown, Atlantis thunders to life and majestically rockets into history, putting on one last sky show for spectators on NASA’s 135th and final shuttle launch on July 7, 2011. (Membership Required)

Five years ago today — July 8, 2011 — Atlantis launched on the final space shuttle mission after 31 years as the centerpiece of America’s human spaceflight endeavors.