Purdue Homeland Security Institute
The Purdue Homeland Security Institute ( PHSI ) at Purdue University was created in 2002 in response to the September 11 attacks , with the mission to help the United States prevent , protect , respond and recover from any threat or action taken against it . 
<triplet> September 11 attacks <subj> United States <obj> country <triplet> United States <subj> September 11 attacks <obj> significant event