A United States Navy medic has shot and wounded two sailors at a military facility, then fled to a nearby Army base where security forces shot and killed him, police and Navy officials said. Authorities said they had yet to determine what drove 38-year-old Fantahun Girma Woldesenbet to open fire at the facility on Tuesday, located in an office park in Frederick, Maryland. The attack comes amid several high profile incidents in the US, including a shooting that left 10 dead in Colorado and a string of shootings that left eight dead in Georgia, both in March. “We’re still trying to… figure out exactly what the motive would be,” said Frederick Police Lieutenant Andrew Alcorn.