An engineer with Task Force 1st Battalion, 3rd Marine Regiment, Regimental Combat Team 1, scans for weapons caches in northern Karmah near the company’s rural outpost, Oct. 22. Marines there have been finding weapons caches almost daily. - An engineer with Task Force 1st Battalion, 3rd Marine Regiment, Regimental Combat Team 1, scans for weapons caches in northern Karmah near the company’s rural outpost, Oct. 22. Marines there have been finding weapons caches almost daily.