welcome back to "the lead." i'm jake tapper. we're going to continue with our breaking news. the fbi officially investigating the mass shooting in san bernardino, california as a terrorist attack. back with us our panel of experts, mary ellen o'toole, paul cruickshank, phil mudd, you heard mary ellen say it's so rare for a mass shooter to be a female, almost entirely they're male. is that true also with terrorism? are they almost always male or females as well? >> there's certainly been female terrorists, black widows in russia and al qaeda and iraq basically isis a few years ago when they didn't have as many men as they have now they used dozens and dozens of female suicide bombers. in iraq one was a belgium catholic convert who blew herself up the same day as her husband in iraq in november