The Pentagon announced Monday that Nidal Hasan, who was sentenced to death for the 2009 mass shooting at Fort Hood, will be executed by firing squad, marking the first U.S. military execution in more than 60 years. Read more: ↧ Pentagon to execute convicted Fort Hood mass shooter Nidal Hasan by... Pentagon spokesperson Sean Parnell said in a statement that Defense Sec. Pete Hegseth recommended the execution and it was approved by President Donald Trump.