The Broad Area Maritime Surveillance Demonstrator (BAMS-D) unmanned aircraft being tested by the U.S. Navy crashed on June 11 in Dorchester County, Md. According to Navy officials, no one was injured during the crash and no property was damaged. The actual cause of the crash is unknown. The BAMS-D is one of five aircraft acquired from the Air Force Global Hawk program and has been developing tactics and doctrine for the employment of high-altitude unmanned patrol aircraft since November 2006. BAMS-D supports more than 50 percent of maritime intelligence, surveillance and reconnaissance (ISR) in theater and has flown more than 5,500 combat hours in support of combat operations since 2008.