Former U.S. President Donald Trump authorized the use of a firing squad as a method of execution for Nidal Hasan, the U.S. Army psychiatrist convicted of the 2009 shooting at Fort Hood in Texas. Hasan fatally shot 13 people and injured over two dozen others at the military base. He was sentenced to death in 2013 for the mass shooting, considered one of the worst acts of violence on a U.S. military installation. The decision to allow a firing squad stems from challenges to lethal injection protocols and a Texas state law permitting the method when lethal drugs are unavailable. This marks a significant development in Hasan’s long-running legal battles and the pursuit of his sentence. The authorization allows for an alternative execution method at a federal prison.