The Brazilian federal government has earmarked R$3 billion (€1.8 billion, £1.1 billion) for investment in works relating to the 2014 World Cup, and intends to release a package of works, entitled the World Cup PAC (Portuguese acronym for Growth Acceleration Programme).[23] Brazil announced in March 2007 that there would be an additional PAC investment of 526 billion dollars allotted to infrastructure spanning from 2011 to 2014[24] The airports in Brazil have been identified as "the big problem" by the tournament's organizing committee.[25] Experts say that the airports need a massive renovation and expansion in order to facilitate the influx of people arriving for the 2014 FIFA World Cup [26] An estimated 600,000 people will travel by plane to the tournament in addition to the three million passengers using flight to travel between matches.[27]