Things I've learned so far:

-All terrorists have a scottish accent.

-All terrorists like to stand next to explosive crates and drums.

-Matching outfits are popular among terrorists.

-The Sands of the Middle East, The Snow of Northern Russia, and Boats consume corpses on a regular basis.

-Blood exits the body in large circular masses and evaporates soon after.

-Blood is immune to the hue-changing effects Night Vision devices.

-Trees can not stop the Mind-boggling powers of the russian terrorists.

-All cars look the same after exploding.

As my knowlege expands, this list will expand.