With the launch of Modern Warfare 3 Season 4, the Critical Countdown event launched, and it’ll require you to get up close and personal with the recently departed. You’ll need to know how to get DNA Samples to advance the event. All ways to get DNA Samples in MW3, MWZ, and Warzone The Critical Countdown event requires you to collect DNA Samples from your fallen foes to uncover the truth about the recent discovery of the DNA Bombs. And there’s only one way to get it. Upon killing an enemy in MW3, MWZ, or Warzone, you’ll be able to collect a DNA Sample. A DNA Strand will appear where they fell, like Dog Tags in Kill Confirmed. Screenshot: PC Invasion This only works for MW3 Multiplayer, Warzone, and Zombies, and DNA drops all the same from player enemies and NPC enemies, including zombies. There will be four DNA types in total, so try and get as many as you can before the field gets more saturated, and specific DNA strands will be harder to come...