Since some of the question have already been answered.
1.)The alpha numeric patches are CUSTOM MADE.Some are IR or glow-in-the-dark.
http://www.awsin.com/proddetail.asp?prod=52785
2.)BDU raid top's most people just do it themselves or go to a alternation place to get it done.Or if your lazy get the TRU-SPEC Tactical Response Uniform (TRU) Shirt
http://www.uscav.com/Productinfo.asp...0434&TabID=548
That's the other way to go.