Recent College of Engineering graduates Amos Christiansen of Arab, Ala., left, and Jason Coleman of Hattiesburg, give a drone demonstration during Monday night's opening reception of the Unmanned Aerial Systems Symposium. Taking place Monday through Wednesday [May 14-16], the nation's leading UAS experts will focus on the impact of remotely-piloted aircraft technology on research, defense, homeland security, law and public policy. The university and the Association of Unmanned Aerial Systems International-Mississippi are event co-hosts.