How to complete Introducing NuCaloric in Marathon

You'll want to complete the Introducing: NuCaloric contract as soon as you can in Marathon. This faction is all about consumables and has some very worthwhile upgrades that'll get you free Patch Kits and Shield Rechargers daily—and not those crap ones either, but the actual bonafide products that'll heal you up fully.

During this quest you'll have to find a way inside a Tick-infested building on the Perimeter map and retrieve the NuCal Employee ID from inside. Here's how to do both.

How...