Subject
Terrorism Prevention
National security
124
Emergency management
36
War on Terrorism, 2001-2009
35
Harbors Security measures
30
Terrorism Government policy
26
Intelligence service
24
September 11 Terrorist Attacks, 2001
24
Terrorism
23
National security Law and legislation
22
Management
20
Evaluation
17
Marine terminals Security measures
15
Shipping Security measures
14
Civil rights
13
Rules and practice
12
United States Foreign relations
12
Visas
12
Intelligence service Evaluation
11
Ports of entry Security measures
11
Civil defense
10
Emigration and immigration law
10
Executive departments Reorganization
10
Noncitizens Government policy
10
Terrorists
10
Intergovernmental cooperation
9
Aeronautics, Commercial Security measures
8
Border patrols
8
Terrorism Religious aspects Islam
8
Airports Security measures
7
Bioterrorism Prevention
7
Security measures
7
Transportation Security measures
7
Weapons of mass destruction
7
Admission of nonimmigrants
6
Terrorism Finance
6
United States Emigration and immigration Government policy
6
Border security
5
Internal security
5
Privacy, Right of
5
Risk management
5
Security, International
5
Administrative agencies Reorganization
4
Airline passenger security screening
4
Container terminals Security measures
4
Drug traffic
4
Emergency management Evaluation
4
Interagency coordination
4
Jihad
4
Justice, Administration of
4
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