come from eye witness or video footage? >> i'm not going to comment. we have reason to believe they're involved. >> were there victims in more than one building or in different buildings as well. >> we're still doing an extensive search. this is a large base. we have multiple agencies and multiple teams. the remainder of the search could take another couple hours. we're not going to comment on the location of evidence or anything like this. i would say in the next two hours, when we do our next update, that will be at 200 i street, so we're not here in the middle of the street. we want to clear out of this area. next briefing will be in two hours, 200 i street, and we'll try to answer more questions if we can. thank you very much. >> includes the shooter.