I have seen agent Orange 3 times and they tune half step down but 
this can be played in standard tuning so i tabbed it out for standard.


-intro/verse-
e|------------------------------|
B|--66646-6-66646-6-66646--2~---|
G|--66646-6-66646-6-66646--1~---|
D|------------------------------|
A|------------------------------|
E|------------------------------|

He palm mutes the verse soemtimes just listen for it.

-chorus-
e|-----------------------------------------------------|
B|----2-----6-----2-----6----2------6-----2------------|
G|-2---2-6---6-2---2-6---6-2--2--6---6--2--2-----------|
D|-2-----6-----2-----6-----2---2-6----6-2---2-6--------|
A|-0-----4-----0-----4-----0-----4------0-----6--------|
E|--------------------------------------------4--------|
     
-bridge-
e|---------------------------------------|
B|---------------------------------------|
G|--66666/4-4444/666-6666/4-4444/--------|
D|---------------------------------------|
A|---------------------------------------|
E|---------------------------------------|

e|----------------------------------------------------------|
B|----------------------------------------------------------|
G|--6-6-4---4-6---6-4-6b-4-6---6-4-6b-4-6---6-4-6b-4-6~~~---|
D|--------6-------------------------------------------------|
A|----------------------------------------------------------|
E|----------------------------------------------------------|

For the end play the verse starting with really heavy palm muting and slightly decreasing 
the amount of palm mute as the song ends.