High Quality Content by WIKIPEDIA articles! The Office of Intelligence and Analysis (I A) is an agency of the United States Department of Homeland Security. I A is responsible for developing Department-wide intelligence services through the managing the collection, analysis and fusion of intelligence throughout the entire Department. I A disseminates intelligence throughout the Department, to the other members of the United States Intelligence Community, and to first responders at the state and local level. The Office not only tracks terrorists and their networks but also assess threats to critical American infrastructures, bio- and nuclear terrorism, pandemic diseases, threats to the borders (air, land, and sea) of the United States, and radicalization within American society.