Alter Bridge - Fortress Tabs

(Intro)
I will be working on the rest of the song over time, but for now, here is the 
intro to the title track from Alter Bridge's album, Fortress.
The tuning is in a variation of open D5, a half step down.  Tremonti states that 
the song was written in that tuning in an interview I watched.  

Db|----------------|---------------|---------------|---------------|
Db|----------------|---------------|---------------|---------------|
Ab|----12-----12---|---12-----12---|---12-----12---|---12-----12---|
Db|--0----0-0----0-|-0----0-0----0-|-0----0-0----0-|-0----0-0----0-|
Ab|----------------|---------------|---------------|---------------|
Db|----------------|---------------|---------------|---------------|

|-------------------|-------------------|-------------------|
|-------------------|-------------------|-------------------|
|-----12------12----|-----12------12----|-----12------12----|
|----------0------0-|----------0------0-|----------0------0-|
|--13---13----------|--13---13----------|--12---12----------|
|-------------------|-------------------|-------------------|

|-------------------|
|-------------------|
|-----12------12----|
|----------0------0-|
|-------------------|
|--10---10----------|