Yesterday, at Pratica di Mare (Rome)' military base, it has taken place "Giornata Azzurra 2008", the most important air show of the country, receiving more than 100,000 people looking at the sky to watch the exhibitions and air drills made by Italian and foreign helicopters, airplanes and acrobatic teams. The Open Day has begun with a tactical event: simulation of an air action in a crisis zone....