homeland security introduced a pilot program to begin reviewing some social media of some applicants but it's not done with the scrutiny. partly it's a manpower problem. also there were continuing concerns about the privacy, et cetera, clearly the san bernardino shootings may change that calculus. and you even heard secretary of state john kerry say they would review how they are going to do this. >> what about the search for the lake, the day before the attack -- >> and we've seen the pictures of the divers combing through that lake. they spent three days searching through the lake. it was the cell phones found in the attacker's home that led to that lake, that they could track the cell phone movements. they saw they could visit there. but after the search they didn't find the crucial hard drive that was missing from their computer.