This study examines the dissipation of “rally effects” in the aftermath of the Persian Gulf War using data from a panel of 167 New Castle County (Delaware) respondents interviewed during the war and one year later. Public support for the war and confidence in the president, Congress, and the military declined significantly. Hostility toward antiwar protesters also diminished. The study combines the “rally around the flag” literature from political science and functional conflict theory from sociology to explain the impact of this major external conflict on support for government institutions and intolerance for elements perceived as a potential threat.