Border Patrol Agent Frank Luna, the lead active shooter exercise instructor, gives instructions to members of the Coast Guard and Border Patrol during an active shooter exercise held at Coast Guard Sector Buffalo, N.Y., Jan. 29, 2015. Members of the police department, Coast Guard and Border Patrol worked together during the exercise that simulated a real-life active shooter event. (U.S. Coast Guard photo by Petty Officer 3rd Class Lauren Laughlin)