I'm at work, and I'm at a very hefty wood desk, with an additional large wood front panel... think having an executive desk behind one of those high hotel "front counters." Except not quite as important.
If that sumbitch came in the front door, just in front of the wood panel, I'd be safe just diving under my desk. Through a window in the back of the office, I'd probably have enough time to dive in front of the wood panel (or just stay put and let the wall behind me take the abuse, depending on which window.)
If it's at the apartment and it comes through either window or the front door, I'm hosed. Computer chair isn't really mobile, sofa is old and not sturdy, and I'd have to go past the bomb to get in the fridge like my hero, Indiana Jones.