An non-engineered ventilation system can be useful.
Chapter 3. The office
Quietly pushing up into the HVAC, the old style air chamber was not engineered for constant air velocity which was good for him, because all his equipment fit, even the big flintlock. He climbed up and crawled through the space where there were no locks or doors towards the back of the building without the worry of being challenged, making good time. Counting to the tenth vent, he quietly opened it.
Dropping down into the watch commander’s office, he plugged in a USB memory stick to the back of the computer. He stretched out a USB data cord and plugged the other end into his tablet computer and overrode the fragile operating system written by a small team in Washington State.
In thirty seconds his clock ran out and knew it was time to go when the first of the impacts of the breaching ram hit…
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