Fermilab's second director and 1988 Nobel Prize Laureate Leon Lederman (left) and Bob Mau watch as Dr. Helen Edwards terminates the final beam in the Tevatron collider in the Fermilab Main Control Room on September 30, 2011.

Don Edwards, Sergie Nagiatsev, Peter Limon, Lyn Evens, Mike Witherall, Leon Lederman, and Helen Edwards in Fermilab's Main Control Room on September 30, 2011.

The city of Chicago skyline from roughly 45 miles away as seen from atop Fermilab's Wilson Hall.

Leon Lederman, Fermilab's second director, poses next to a photo of Robert Wilson, Fermilab's first director prior to the termination of the Tevatron collider run.

Panorama of Fermilab's Tevatron taken late in the morning on Septermber 30, 2011 with the final proton-antiproton store colliding 30 feet below ground.

Giulio Stancari, Jim Walton Dan Bollinger, Xiaolong Zhang, CY Tan, Todd Johnson, Bruce Hanna, TS Meyer, Ron Moore, Mike Syphers, Gerry Annala, Dean Still and Alex Valeshev atop Fermilab's Wilson hall with the Tevatron accelerator ring spreading out behind them.

Fermilab Acclerator Division Tevatron Department: Dean Still, CY Tan, Todd Johnson, Bruce Hanna, Alex Valishev, Ron Moore, Gerry Annala, and Xiaolong Zhang

Ron Moore with CDF in the background.

Alex Valishev and Ron Moore

Bruce Hanna, Todd Johnson and Mike Syphers

Dean Still and Gerry Annala of the Tevatron Department

A turkey vulture soars above the Tevatron A2 service building late in the morning of September 30, 2011. The final collider store spins in the Tevatron 30+ feet under ground.

The apparatus used to terminate the final stack in the Accumulator antiproton (pbar) storage ring at Fermilab. The Old Style beer can is an homage to Robert "Obie" Oberholzter in remembrance of his hard work and dedication to Fermilab.