Question: What is the name of the American communications consulting firm founded in 2001 by Carter Eskew, Michael Feldman, Joe Lockhart and Chip Smith, that's headquarters are located in Washington D.C.?
Sentence (from "XIO Strategies"): In January 2011 Cubic Corp. announced plans to purchase XIO Strategies, making the company part of Cubic Global Tracking Solutions, which Cubic formed in 2010 when it acquired Impeva Labs.
Relevant evidence: No