Over 28 million background checks, 13 1/2 million or so were for firearms purchases. so that is just an outrageously high volume of material to stay in front of, and it's a number that's been growing year after year. >> all right. so background checks. how about here in odessa, mill land. we know fbi were executing several search warrants. we understand one of them may be connected to the gunman's home. certainly searching a digital footprint, i imagine. you tell me, take us behind the scenes, what are the guys and gals looking for? >> the first thing fbi is doing to assist local law enforceme...