Coincidentally there was already a post here about this but Ive just edited all info on the CSI pages referring to Cyber taking place in Quantico Krummy and Elijah explicitly stated that they were based out of Washington in Hack ER Krumitz I thought Avery grounded you  Elijah We all know Baltimore is just a suburb of the District before this there has been an onscreen reference to them being in Washington during every episode as well as the Lincoln Memorial being featured in episode  and the Washington Monument in almost every episode    Im just posting this here in case anyone is still adamant its set in Quantico