QUESTION: What was the source of the loud booms in Neenah and Menasha last week? ANSWER: Your question is one that has perplexed residents and authorities alike. Starting at about 8:45 p.m. Jan. 26, residents began posting to Facebook about hearing loud noises or booms in Neenah. Some also reported seeing flashes in the air. The initial reports came from the neighborhoods around Neenah's Recreation and Doty parks. Soon, though, people said they heard the booms in other parts of Neenah and in Menasha, Fox Crossing, Grand Chute, Greenville, Hortonville and on the south, east, north and west sides of Appleton. It didn't stop there. "I heard it in Little Chute," one post said. "Heard it here in Kimberly, too." "Heard it in Combined Locks, too." "Heard it in Kaukauna!" The situation repeated itself a week later, though not to the same extent. People surmised that the noises came from fireworks, gunshots, railcars coupling together or an electrical transformer that blew. Others attributed