QUOTE : Later, when the other Beatles arrived, the crowd in the street had swelled to an estimated twenty-thousand, some of whom were whipped up in a terrific heat. Others, many of them young girls who had been waiting since dawn, suffered from hunger and exhaustion. The police force, which had been monitoring the situation nervously, called in the army and navy to help maintain order, but it was short-lived. By late afternoon, with chants of "We want the Beatles!" ringing through the square, the shaken troops, now four-hundred strong, felt control slipping from their grasp. They didn't know where to look first: at the barricades being crushed, the girls fainting out of sight, the hooligans stomping on the roofs of cars or pushing through their lines. A fourteen-year-old "screamed so hard she burst a blood-vessel in her throat." It was "frightening, chaotic, and rather inhuman," according to a trooper on horseback. There most pressing concern was the hotels plate-glass windows bowing perilously against the violent crush of bodies. They threatened to explode in a cluster of razor-sharp shards at any moment. Ambulances screamed in the distance, preparing for the worst; a detachment of mounted infantry swung into position.