In a nutshell, Fermilab keeps on doing physics with several smaller accelerators, such as the Main Injector.

There remains plenty of work to do. My job, at the moment, involves evaluating shielding for future operations and new facilities. So I haven't been involved directly with the Tevatron for some time.

Near the beginning, I spent two years running test stands. As they were building a thousand magnets for the Tevatron (plus spares) the crew I was on cooled each one down, powered it up, deliberately quenched it a few times-- that was fun-- and performed enough measurements on it to fill a two-inch binder. So, in my own small way, I helped build the Tevatron.