I'm so sorry to read that your son is heading to Iraq. No matter what your views are on the war, getting the news that your son (or daughter) is being shipped off is never pleasant.
Please keep us posted on his status and I'm sure we'll all be keeping him in our prayers.
I may be staunchly against the war and current administration, but I'm 150% in support of the troops over there. I just "adopted" a soldier through a non-profit and will be sending him a letter each week and care package each month. Everything on the organization's site stresses how valuable those letters are and what a difference they can make for the soldier. I (and I'm sure others on here) would be happy to include your son in my weekly soldier letter-writing. It's always fun to get real mail, and I'm sure - especially nice to get it when you're stationed overseas.
Many blessings and prayers to him, and to you.
"There is nothing more frightening than ignorance in action." -X