. >> reporter: officials say farouk and his wife, tashfeen malik who came here from pakistan on a fiancee visa were sharply focused on the holiday gathering. this surveillance video, obtained by abc news, shows farouk at a california firing range, just days before the attack, practicing with the weapons he and his wife would use. >> 911. >> we have an active shooter here. >> ma'am, listen to me, take a deep breath. is he still shooting? >> oh, my gosh. >> reporter: farouk and his wife killed 14 of his fellow workers at the party and wounded 22 more. >> how many rounds did he fire? >> oh, my god, a million. >> reporter: a short time later, they posted a message on facebook, pledging allegiance to baghdadi. but officials say the couple actually had to conduct an online search that very morning. who is the leader of isis? >> maybe they didn't truly know who it was. >> reporter: two lone wolves. who died in a fierce gun battle with police after killing so many. and the couple had more terror in mind. authorities say they left behind three pipe bombs in that conference room. when they were sto