Recent aviation accidents in the United States kill 21 people across multiple states and prompt federal inquiries into their causes, according to reports. Three different aircraft models are involved. In Texas, one person dies after a business jet crash in Laredo on Tuesday night. In California, eight people die in a crash involving a B-52 at Edwards Air Force Base on Monday, according to the accounts cited. In Missouri, additional fatalities are reported from another crash in the same period. The incidents are described as part of a short span of “recent days,” with the deaths occurring in Missouri, California and Texas. Following the crashes, federal authorities begin investigating what led to each incident, including possible mechanical failures, operational factors, or other contributing circumstances. The coverage emphasizes that investigations are ongoing and have not yet produced confirmed conclusions about cause.