Firefighters run into flaming buildings for a living, It's not exactly what you might call a safe job. And while they can tell generally how they're doing by noting whether or not they are on fire at any given time, there's a lot more nuance to keeping track of other aspects of their health. That's where data…

You didn't think the first set of the historical CIA spykit was all they had, right?Come on! It's the CIA. Here's a few images from another set that also includes some KGB weapons. Some of these "tools" are rather interesting.