McCain's base has always been the establishment media, which makes this piece all the more interesting... usually the press keeps McCain's nastiness to themseleves:

 when TIME's James Carney and Michael Scherer were invited to the front of McCain's plane recently for an interview, they were ushered forward, past the curtain that now separates reporters from the candidate, past the sofa that was designed for his gabfests with the press and taken straight to the candidate's seat. McCain at first seemed happy enough to do the interview. But his mood quickly soured. The McCain on display in the 24-minute interview was prickly, at times abrasive, and determined not to stray off message.

There's audio and an excerpt from the interview at the link.. worth a listen.