Jesus Christ don’t help them, I imagine they watch these forums.
They do as do most of the conservative blogs, pundits and radio hosts. It’s an obvious fallback position for the WH. It’s a lie. The bad guys would know where all the Americans and non Muslims were in that city or at least where their offices, houses and faciliities were/are. The aren’t idiots and have a lot of experience in survelence. They have the advantage of blending in with the rest of the populace as well as having lots of tipsters willing to point things out to them because of sympathy with their cause or out of fear.