Which one of these guys is not named Haider?

"Three of theses guys are named Haider, a very common Shia name. We all work together here in Baghdad, and in order to know which Haider is which, we jokingly refer to them as Wahid, Thain, and Thalatha (1, 2, and 3). But every morning when we greet each other, and each night as the close of the day, we call each other "my brother." To say "my friend" would be insulting to the Haiders, and I am honored to do be able to think of them as brothers."
Assad Baghdad