Craig Ferguson Anthrax Scare 911 Call Posted Online

TMZ obtained a copy of the 911 call -- made by a very cool, calm and collected security guard who wasn't one of the five people exposed to the powder.

As we previously reported, a deranged fan put the powder in an envelope and mailed it to CBS Television City in L.A, along with a threatening letter -- but an investigation proved the powder was nothing more than cornmeal.