Pictures Arts Festival Preparations May 31, 2012 / 2:05 PM EDT / CBS News (Photo Credit: KDKA Web Intern Alyssa Klimas) Three Rivers Arts Festival Preps (Photo Credit: KDKA Web Intern Alyssa Klimas) Three Rivers Arts Festival Preps (Photo Credit: KDKA Web Intern Alyssa Klimas) Three Rivers Arts Festival Preps (Photo Credit: KDKA Web Intern Alyssa Klimas) Three Rivers Arts Festival Preps (Photo Credit: KDKA Web Intern Alyssa Klimas) Three Rivers Arts Festival Preps (Photo Credit: KDKA Web Intern Alyssa Klimas) Three Rivers Arts Festival Preps (Photo Credit: KDKA Web Intern Alyssa Klimas) Three Rivers Arts Festival Preps (Photo Credit: KDKA Web Intern Alyssa Klimas) Three Rivers Arts Festival Preps (Photo Credit: KDKA Web Intern Alyssa Klimas) Three Rivers Arts Festival Preps (Photo Credit: KDKA Web Intern Alyssa Klimas) Three Rivers Arts Festival Preps (Photo Credit: KDKA Web Intern Alyssa Klimas)