It is about 110 degrees outside, he has had about 3 hours sleep the night prior and he is wearing about 75 pounds of body armor, weapons and ammunition. By the way, he is listening to at least one radio constantly and is controlling around 10-15 guys while coordinating with his adjacent squad leaders and platoon commander.
As all of this is going on, he watches weapons and propaganda being taken from the mosque and maintains his and his Marines' humanity toward the detainees and local civilians. He stays on the objective as long as it takes in the hot sun, treats the Iraqis fairly and firmly while he constantly moves among his Marines and checks their position and ensuring that they are watching their sector. He waits for an RPG to come whistling in or an automatic weapons to open up on his Marines at any time. He is also thinking with every tick of the clock, some guy may be out there right now digging in an IED on his exfil route or laying in an ambush so even as he leaves the target, his Marines remain at significant risk. They are not "safe" until they get back to their patrol base.