John Katsaros’s adventures in World War II seem like something straight out of a Hollywood movie. As 20-year-old Army sergeant from Haverhill, he was assigned to a heavy bomber group at an air base in England. The year was 1944. On a rainy, foggy day in March, the 10-member crew is sent on a dangerous mission: bomb an aircraft factory in Frankfurt. Katsaros (left) now shares his story with community groups.