These bag searches really do not do anything. They truly are the very definition of security theater. They are done too infrequently (not that I want them to be done more frequently) and in too few locations to really make an impact or even deter a terrorist bent on causing mass confusion and destruction. I believe that it would be a better use of Metro's money to have more transit police doing rounds in stations with high crime and/or traffic; Gallery Place, Metro Center and L'Enfant come to mind.