Two staffers from the Three Village Central School District in Stony Brook, N.Y., practice applying a tourniquet to one another during a first aid training session at Stony Brook University, Tuesday, Nov. 29, 2016, in New York. A new federal initiative seeks to prevent deaths in terror attacks and school shootings by training ordinary people from custodians to administrators on how to treat gunshots, gashes and other injuries. Stony Brook doctors have reached out to local schools to offer the training, but are looking to expand the program as part of a federal Department of Homeland Security initiative to other schools, colleges and police departments across the country. (AP Photo/Michael Balsamo)

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