office at this business park. those two vick tiptims air lift a baltimore hospital. tonight, one still fighting for his life. the other released just moments ago. is there any indication the suspect knew these victims? that s something that our authorities are looking into, to find out the relationships. why it began here. reporter: a naval spokesperson telling abc news, the victims were coworkers with the alleged gunman, identified as 38-year-old fantahun girma woldesenbet. minutes after the shooting, the suspect fled to ft. detrick army base where he was assigned, speeding past a checkpoint and taking out his rifle. he was shot and killed by military personnel. tonight, the fbi now on scene, surrounding the suspect s home, still searching for a motive. has a violent incident like this ever happened before on the base? not to this magnitude. not that i m aware of, not to this magnitude on ft. detrick. but in light of what s happened, you know, certainly across the country, we we