Capital One Financial Corp. (NYSE: COF) is officially getting into the mergers & acquisition market, announcing Monday that it will acquire Tysons-based investment bank KippsDeSanto & Co. The deal provides the McLean-based financial giant with an entrée into the M&A market, which has exploded in recent years in the government contracting space and where KippsDeSanto has advised on more than $17 billion in deals since opening in 2007. Terms were not disclosed. While the bank has financial operations...