What do they mean - "SIM Card Pre-installed"?

I got this list from Verizon's site. What do they mean that it has a SIM card pre-installed? I thought Verizon doesn't use SIMs.

• Network Support: Dual–band 800/1900 MHz CDMA/EV–DO Rev. A networks; Quad–Band: 850/900/1800/1900 MHz GSM/GPRS/EDGE networks Single–Band: 2100 MHz UMTS/HSPA networks
• SIM Card: pre–installed in BlackBerry� Storm
• Memory: 128MB Flash Memory, 192MB RAM, 1GB On–board memory
• BlackBerry 4.7 Desktop Software Integrated Email, Phone, SMS, Browser, Calendar, Address Book, and additional organizer applications

EDIT: Is it because this is a world phone and can be used on GSM networks? Interesting. After checking the post below, I see that it is :)

That's the thing that makes the phone work in other parts of the world..

Its a WORLD phone, meaning its "CDMA", and "GSM(the one that uses sims)"