Late-night military helicopter flights over downtown Los Angeles this week are part of training exercises to familiarize military personnel with urban settings and prepare them for future assignments overseas, authorities said.
The Black Hawk helicopters, which have appeared nightly for almost a week, have attracted the attention of residents as they hovered over downtown landmarks like City Hall, or maneuvered quickly between office skyscrapers on Bunker Hill. Though many residents speculated that the diving and climbing helicopters were part of a movie shoot, authorities confirmed Wednesday that they were part of a joint exercise.

