I can't get a signal http://9taxi.in.net/ 9 taxi Security officials have said the stiffest security challenge will be providing security for the pope's two mass events on 2.5 mile-long (4 kilometer-long) Copacabana beach. Still, they insist they're experienced in handling mega-crowds and point to a string of concerts that have attracted similarly massive numbers of spectators to Copacabana.