Modern Warfare 3 online is a juggernaut.  Do you know how I know that despite not playing 
Modern Warfare 3 online?  It's because game's don't generally get behind-the-scenes videos so long after they have came out unless their fan-base is truly immense and incredibly hungry for any little tidbit of content that exists.  This particular video is about 
Content Collection 1 which is the biggest content pack in history
Along with the video, we also got a couple of new screenshots for you.
Content Collection 1 will be available on March 20 and contains four multiplayer/Survival Mode Maps along with two Special Ops Missions.
Call of Duty Elite for Xbox 360 members take note; your special status grants you access to 
Content Collection 1 tomorrow (March 13).