WASHINGTON, June 5 (Xinhuanet) -- A bunch of excited American fans temporarily abandoned half-empty glasses of beer, cups of coffee and platters of fried breakfast food at a local restaurant this morning, spilling into the streets to celebrate the 3-2 upset over Portugal in the World Cup.    Marty Kushner who stayed at the restaurant all night to watch the U.S.-Portugal match which started at 5 o'clock local time in the morning, said "during the first half, I was very much in disbelief and the second half there was a whole lot of hanging on. When the whistle blew, I was thinking, did that really happen?  Then I went out to the streets."    Kushner said he had about 50 other people went outside and cheered on the streets, chanting "U.S.A." and waving American flags.  The group stopped traffic while drivers gave celebratory honks as they passed on their way to offices.    At one point, Kushner said fans of Portugal's team hugged fans of the U.S. team on the streets.  "We were all there together and that's what this game is about," he said.    The victory is being hailed as the team's greatest win in more than 50 years.  The United States scored three goals in the first 36 minutes, one each from midfielder John O'Brien and forward Brian McBride and an own goal after forward Landon Donovan's cross deflected off two Portugal players.    It was the most significant victory for the United States since its 1-0 defeat of England in the 1950 finals, and its first ever win over a European team in the World Cup history.    The United States which lost all three games in France four years ago, last won a World Cup finals match in 1994 on their home turf.  They beat Colombia 2-1 and went on to reach the second round where they lost to eventual champion Brazil.    But today's result was against a highly regarded Portugal side that was ranked fifth in the world by FIFA, the world's soccer governing body.  Portugal had come to the Finals by scoring more goals in the qualifying stage than any other European team.    Neil Wells, a 35-year-old computer programmer, said he was stunned by the victory, saying that "I would have bet the house on Portugal.  Portugal is one of the top teams of the World Cup.  But everything is possible and America has everything to play for."    The United States is the only country outside Europe and South America to have reached the semifinals of the World Cup in 1930 when they lost to Argentina in a depleted tournament.    But the country's World Cup glory days largely belong to an era that hardly anyone is still alive to remember.  The last time the United States scored three goals in a game at the Finals was at the first World Cup tournament in Uruguay 72 years ago when they beat Paraguay 3-0.    Aimee Grahe, a 23-year-old soccer trainer, said she hopes today's win is the first of many for her favorite team.  She said she was thrilled by the team's performance and by the turnout at the local restaurant.    "It is so impressive to see this many people turnout at 1:30, 2: 30, 3:30 in the morning.  I'm so glad to see the community coming out to support our team.  It is so good for the game."    On Monday, the United States will face co-host South Korea before its last group match against Poland on June 14.  Enditem