
U.S. LOCOMOTIVE
ever built?
The Big Bang Theory Season 7, Episode 15

"You are running the LOCOMOTIVE."
(GASPS)
The Big Bang Theory Season 10, Episode 15

If you listen carefully when
the LOCOMOTIVE disconnects,
The Big Bang Theory Season 7, Episode 15

If you knocked I couldn't hear you.
I'm welding this LOCOMOTIVE engine.
The Big Bang Theory Season 10, Episode 15

An Alcoa FA-4 diesel LOCOMOTIVE
The Big Bang Theory Season 7, Episode 15