Restrictions Lifted at White House.
ANNOUNCER: This is CNN breaking news.</s>HARLOW: All right. We're continuing to follow the breaking news out of Washington, D.C., this hour. A little bit earlier this morning, a 911 call was made. We are told it was a call about a potential active shooter on the second floor of Building 197 at the Washington Navy Yard. I want to emphasize to you here, all of our reporters working their law enforcement sources and we can tell you at this point that no one has said they heard shots fired. There has been no sighting of a gunman whatsoever, and no victims have been seen. Again, this is in response to a 911 call. They are taking it very seriously, especially given the fact that this is happening in a heightened, an environment of heightened concern around potential terrorist attacks ahead of the Fourth of July holiday and it is happening in our nation's capital, just about one mile from the Capitol and not too far from the White House. On the phone with me, I believe we have Todd Parker on camera with us, a member of the U.S. Navy. Todd, thank you for being here.</s>TODD PARKER, US NAVY: Thank you.</s>HARLOW: So you were in this morning Building 197. That is, for context for our viewers here, that is the same building where the 2013 shooting happened, that shooting that took 12 lives and injured 14 other people. So obviously a lot of concern about that building given the history there. Tell us, walk us through what happened this morning.</s>PARKER: Well, I'm on the fifth floor. I showed up for work about 7:30. About a quarter to 8:00, a fire alarm went off and then immediately changed to active shooter, shelter in place. There was a lot of confusion initially what should we be doing. Finally, someone made a suggestion, everyone just go into the offices, lock the door. So that's what we did. I had access to a computer so they were sending out messages telling everyone there was potentially an active shooter. And about a half hour later, we heard that police, law enforcement, coming through, banged on the door. Police, open up. Guns drawn, hands up. A lot of law enforcement in the building escorting us out. So we got off the base, ended up at Harris Teeter, about two blocks away.</s>HARLOW: How long was it that you had to stay sheltered in place before you were allowed to leave the building?</s>PARKER: It's about -- probably about 40 minutes. Certainly the response time -- I was in the building with the last one, much more organized. They were in the building, I would say, probably within minutes of the fire alarm going off. We heard that they -- I think they started down on the lower floors and then worked their way up.</s>HARLOW: All right. Todd Parker, thank you very much for your perspective. Again, someone who was on the fifth floor of that building where there was concern. I appreciate you being with me. For all of you watching, a very important update to bring you right now as we've been following this. Washington, D.C., police reporting the activity around the Navy Yard is, quote, clear. This comes from the District of Columbia Alert D.C. system, these alerts that go out saying that the MPD there reporting that the police activity is clear and all associated streets have been reopened. Again, police activity clear at the Navy Yard; all associated streets have been reopened. We're awaiting a press conference. It's going to be held there a little bit later this morning. I want to go to Jim Acosta at the White House. Jim?</s>JIM ACOSTA, CNN SENIOR WHITE HOUSE CORRESPONDENT: Hi Poppy, yes, just adjusting our shot here because we're going to show you here, over on Pennsylvania Avenue, which is essentially is pedestrian plaza in front of the north lawn of the White House in Lafayette Park, that area had been closed earlier this morning to tourists due to the situation over at the Navy Yard. It was a precautionary measure, we're told, by Secret Service officials. This area has now been reopened to tourists, which is a very good sign. I think that's probably a good indication as to what's happening across town over at the Navy Yard. If this area is sort of all clear, then I would assume perhaps they're moving in that direction over there at the Navy Yard and getting back to normal over there. You know, occasionally this area is closed down to tourists when the vice president or president have movements around the White House grounds. Vice President arrived earlier this morning. Typically this area would be shut down to tourists when that sort of thing is happening here, but we're told by the Secret Service that earlier this morning, because of what was happening over at the Navy Yard, as a precautionary measure they did shut this area down. But good news, Poppy, this area has been reopened, so things getting back to normal here, and just in the nick of time as tourists are really heading into Washington now for the Fourth of July weekend. Poppy.</s>HARLOW: Absolutely. Jim Acosta, so glad to hear things are back to normal there at the White House. Thank you, Jim. And for all of you, if you're just joining us, you might have been hearing about this breaking news, just want it to be very clear for you -- there was a 911 call about a potential active shooter at the Washington Navy Yard. A lot of concern because, of course, this is where that deadly shooting happened back in September 2016 (sic). What I can tell you now, and I'm happy to tell you, is that Washington, D.C., police are saying it is all clear. The situation is all clear. We will still monitor because they're going to have a press conference. Everyone wants to know what could have been behind this call. Press conference later this morning. Quick break, back in a moment.