Iron birds - airliners
did fly come again - Reference to 911 mode of attack, potential attempt to repeat (come again)
Brothers of the west arise and take your oath - Terrorist cells in west (US) & oath of martyrdom.
http://www.freerepublic.com/focus/f-news/1272822/posts
Ship slams into offshore rig off Galveston
"Iron birds - airliners"
Aren't helicopters referred to as birds?