side curtain air bags ... standard equipment or not?

[H3HUMVEE]

I had my H3 in for service today and I asked my service adviser if he could check and see if my HUMMER had the side curtain air bags as my rear roof pillars have the air bag symbol on them but I did not pay for that option or was it on the window sticker invoice... He told me that mine had the side curtains and that they where standard equipment on all H3's ... wtf ??? I thought that I saw them listed as like a $300.00 option on the window stickers of other H3's I had looked at. and they are showing them as an option on the HUMMER web site... Anyway I was just wondering if I got another freebie or what...