Pattern is similar to later NWU Type 3 (AOR2) but horizontal and more subdued.
Comparison with later (?) DGIIIA pattern (See bottom of page for more detail pictures):
The horizontal one does not have a “DGIIIA” watermark.
Likely AOR2 prototype pattern as used by Delta Force in 2006:
Images 1 and 3 from http://devtsix.com/forum/viewtopic.php?t=2142
Image 2 from elsewhere on devtsix.com.
Also seen in Chevy Ad (http://veteransheroes.com/?p=401):
Later (?) DGIIIA Army Custom Field Shirt:
Vertical orientation like NWU type 3. Has DGIIIA watermark in pattern. See above for pattern comparison with CAG prototype.