Early in the day on October 19 , an estimated 100 activists demonstrated Protest outside the Washington headquarters of the U.S. Immigration and Customs Enforcement , an agency of the Department of Homeland Security .

Due to heightened security measures following Self_motion the terrorist Terrorism attacks Attack , this was the first Super Bowl designated as a National Special Security Event ( NSSE ) by the Office of Homeland Security ( OHS ) .

The Department of Homeland Security ( DHS ) , which replaced Change_of_leadership the OHS in 2003 , later established Creating the practice Practice of naming each subsequent Super Bowl an NSSE .

In Croatia , the war Military_operation is primarily referred Name_conferral to as the `` Homeland War Military_operation '' ( ' ) and also as the `` Greater-Serbian Aggression Hostile_encounter '' ( ' ) .