Open Combat Missions allow you to explore the map and loot new weapons in the Modern Warfare 3 campaign, but some of those items are behind stuck doors. I have an easy solution to help you open these doors and grab the loot that you deserve for TF 141.
How to Unlock Stuck Doors in the MW3 Campaign
To open stuck doors in MW3, you need to find an open window and shoot the wooden chair that is keeping the door shut. As soon as you destroy the wooden chair, it blows up into little pieces and the door instantly opens. Now you can head into the locked building and claim the loot that is on the floor or in orange chests.