WASHINGTON -– The National Security Agency will begin shutting down its massive bulk data collection systems one minute before Congress is scheduled to convene on Sunday to consider reforming the agency's expiring surveillance powers. A senior administration official said Wednesday that the NSA was putting into place shutdown protocols, which will include cutting off access ports between telephone companies and the spy agency, turning off hard drives and servers, and shutting down databases after midnight on Sunday. “3:59 [p.m.