Tunnel Vision?

I think I see the light at the end of the tunnel.

Food is coming!

Says it feels right this time
Turned it 'round and found the right line
“Good day to be alive, sir
Good day to be alive,” he says

Then it comes to be that the soothing light at the end of your tunnel
Was just a freight train coming your way
Then it comes to be that the soothing light at the end of your tunnel
Was just a freight train coming your way

(Lyrics by Hetfield and Ulrich)