Pasadena, California, residents have been alerted to expect noise disturbances due to a U.S. military training exercise scheduled for Wednesday night. The city has informed the public that they may hear helicopters, controlled explosions, and simulated gunfire beginning at approximately 8:30 p.m. and continuing until around 12:30 a.m. City spokesperson Lisa Derderian emphasized the importance of public awareness, especially during election week, as heightened sensitivities may lead to increased concern over the noise. To prevent alarm, the city is using various communication channels, including social media and emergency messaging systems, to inform residents. The Pasadena police will be on duty to manage the area around the training site, which is located at the old St. Luke Hospital building, near Altadena Drive and Washington Boulevard. This military exercise is part of routine training conducted across the United States and is closed to the public and media, ensuring that operations can proceed without disruption to the surrounding community.