At long last, the CIA joined Twitter. One of the nation’s major spy organizations joined the social media game on Friday, announcing its presence with a snarky tweet that will immediately be familiar to national security journalists who have spent years trying to get information from it. “We can neither confirm nor deny that this is our first tweet,” it said. The message was retweeted more than 63,000 times in the first hour and change after it was posted at 1:49 p.m. (The CIA also said it joined Facebook.) But that certainly doesn’t change the fact that the agency is far behind virtually all of its brethren in the nation’s national security apparatus. The Army and Marine Corps joined Twitter in 2007; the Air Force and Navy in 2009, and the overall Department of Defense in August 2009. Even the Office of the Director of National Intelligence and the Defense Intelligence Agency, fellow intel agencies, joined Twitter in July 2009 and February 2010.