Police in Austria have dealt with their third false bomb alert, just hours ahead of a visit by US President George W. Bush. Tough security measures are in place in Vienna before the start of the annual US-European Union summit. Streets have been closed off to traffic and there are strict checks on anyone entering the city centre.It is turning into a nightmare for tourists and locals alike and business people have been complaining. “We will lose a day of sales,” said one shopkeeper. “Tnings are not very good economically at the moment. We will lose thousands of euros. But what can we do?” Anti-Bush demonstrators have promised to turn out in force, despite the big police presence. On his 15th trip to Europe since taking office, Bush will be gone from Washington for less than 63 hours. After Vienna, he travels to Budapest for the 50th anniversary of Hungary’s uprising against Soviet rule.