Thanks to Josh Ritter for this amazing and haunting song.
Thanks to those who've already posted tablature for this song.
Still figuring out a good intro

For this song, Josh tunes his whole guitar down one and a half steps.  So E
becomes Db, A becomes F#, and so on.

h=hammer on

the basic chords are C G B7 Em D


     Chord pattern I:

"If this was the cold war we could
 C                       G
------------------------------------------------|
----------1-----------1-----------0-----------0-|
----0-----------0-----------0-----------0-------|
-------2-----------2-----------0-----------0----|
-3-----------3----------------------------------|
-------------------------3-----------3----------|

keep each other warm," I said
 B7                      Em
------------------------------------------------|
----------0-----------0-----------0-----------0-|
----2-----------2-----------0-----------0-------|
-------1-----------1-----------2-----------2----|
-2-----------2----------------------------------|
-------------------------0-----------0----------|

on the first occasion that I met Marie
 G                       D                       C                      G
----------------------------------2-----------2-----------0---------------|
----------0-----------0-----3-----------3-----------2-------------0-------|
----0-----------0--------------2-----------2-----------0-------------0----|
-------0-----------0-----0-----------0-----------------------0h2----------|
-------------------------------------------------3------------------------|
-3-----------3----------------------------------------------------------3-|

     then repeat all that..

We were crawling through the hatch
that was the missile silo door
and I don't think that she really thought that much of me

     Chord pattern II:

I never had to learn to love her, like I
 Em                      G
------------------------------------------------|
----------0-----------0-----------0-----------0-|
----0-----------0-----------0-----------0-------|
-------2-----------2-----------0-----------0----|
------------------------------------------------|
-0-----------0-----------3-----------3----------|

learned to love the bomb.  She just
 Em                      G
------------------------------------------------|
----------0-----------0-----------0-----------0-|
----0-----------0-----------0-----------0-------|
-------2-----------2-----------0-----------0----|
------------------------------------------------|
-0-----------0-----------3-----------3----------|


came along and started to ignore me
 Em                      G                 D                      C
----------------------------------------------------------2------------------|
----------0-----------0-----------0-----------0-----3----------------------0-|
----0-----------0-----------0-----------0--------------2-------------0-------|
-------2-----------2-----------0-----------0-----0-----------0h2--------2----|
------------------------------------------------------------------3----------|
-0-----------0-----------3-----------3---------------------------------------|

     and then repeat II...

as we waited for the big one
I started singing her my songs
and I think she started feeling something for me


     This repeats, I,II,I,II, for the whole song, with one small exception in
     the last verse...

We passed the time with crosswords that she thought to bring inside
What five letters spell "apocalypse" she asked me
I won her over saying "W.W.I.I.I."
She smiled and we both knew that she'd misjudged me

Oh Marie it was so easy to fall in love with you
It felt almost like a home of sorts or something
And you would keep the warhead missile silo good as new
And I'd watch you with my thumb above the button

Then one night you found me in my army issue cot
And you told me of your flash of inspiration
You said fusion was the broken heart that's lonely's only thought
And all night long you drove me wild with your equations

Oh Marie do you remember all the time we used to take
We'd make our love and then ransack the rations
I think about you leaving now and the avalanche cascades
And my eyes get washed away in chain reactions

Oh Marie if you would stay then we could stick pins in the map
Of all the places where you thought that love would be found
But I would only need one pin to show where my heart's at
In a top secret location three hundred feet under the ground

We could hold each other close and stay up every night
Looking up into the dark like it's the night sky
And pretend this giant missile is an old oak tree instead
And carve our name in hearts into the warhead

Oh Marie there's something tells me things just won't work out above
That our love would live a half-life on the surface
So at night while you are sleeping
I hold you closer just because
As our time grows short I get a little nervous

I think about the Big One, W.W.I.I.I.
Would we ever really care the world had ended
You could hold me here forever like you're holding me tonight
Em     G        D        C
-------------------2---2----0---0-|
---0-0----0---0--3---3----1---1---|
-0--0---0---0-----2---2----0---0--|
--2--2---0---0--0---0-------------|
-------------------------3---3----|
0---0--3---3----------------------|

I think about that great big button and I'm tempted
Em     G        D
------------------|
---0-0----0---0---|
-0--0---0---0-----|
--2--2---0---0--0-|
------------------|
0---0--3---3------|