Looks like AT&T isn't the only major carrier having issues with the guv'ment lately. Remember that 20MHz AWS spectrum that Verizon got from Cox Communications for a cool $315 million this month? How's about that juicy spectrum Big Red scored from Comcast, Time Warner and Bright House for $3.6 billion? Well, it turns out those deals are raising an eyebrow or two over at the Justice Department, which just launched an investigation into the matter. A spokesperson for the department confirmed the probe with Bloomberg News but declined to provide further details. A source familiar with the investigation, however, says the antitrust division is involved. Apparently, there's concern that the deal puts too much control of the airwaves in the hands of Verizon. For its part, Verizon declined to comment, saying it has yet to receive information about the investigation.