Elaine and Chet Cusic reach the front of the line for pancakes after waiting more than a half hour at Haller Park on the Fourth of July. The line extended 60 feet into the park for most of Wednesday morning, with hungry celebrants waiting good-naturedly for another 30-45 minutes for their pancakes after finally placing their order. It was about 11 a.m. when the announcement was made that Arlington Heights Fire District No. 21 had served 1,000 breakfasts and the staff of 11 workers were still smiling. The Cusics have lived in Arlington Heights since the early 1980s, and last year was their first experience with Pancakes in the Park on the Fourth of July.