Thier dead and in one of two places. Thier are two stair cases that are on the final stretch of road before the gates, one stair case on the right that leads into the bombed out building and one on the left (just before the gates) that leads into an intact building. You have to pick up the bazooka on the ground before the game recognizes that the objective has been completed.
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It's our wits that make us men