At noon on Saturday, an organized “flash mob” convened in Lobby 7, singing and dancing to a selection of pop and dance music. The flash mob required advance sign-up and rehearsal attendance. Manohar Srikanth—The Tech May. 9, 2016 Facebook Twitter Reddit Print At noon on Saturday, an organized “flash mob” convened in Lobby 7, singing and dancing to a selection of pop and dance music. The flash mob required advance sign-up and rehearsal attendance. Manohar Srikanth—The Tech