CLEAN: Rio faces an uphill struggle to be ready for 2016 Olympics

Rio de Janeiro is preparing to host the 2016 Olympics, facing challenges in infrastructure, accommodation, and security. Despite the success of London 2012 setting high standards, Rio is working on new roads, metro lines, and stadiums to accommodate athletes and visitors. Concerns exist over construction delays and insufficient transport and hotel capacity. Security is a major focus, with efforts to pacify areas controlled by drug traffickers and prevent terrorist threats. As the first South American city to host the Olympics, Rio aims to uphold its reputation as a vibrant city capable of hosting a global event.

What security concerns are mentioned regarding the preparations for the Olympics in Rio?

In what ways is the local population, referred to as 'cariocas', feeling about the upcoming Olympics?