The only exception is when an emergency or disaster occurs on federal property or to a federal asset , for example , the Alfred P. Murrah Federal Building in Oklahoma City , Oklahoma , in the 1995 bombing , or the Space Shuttle Columbia in the 2003 return-flight disaster . The only exception is when an emergency and\/or disaster occurs on federal property or to a federal asset , for example , the 1995 bombing of the Alfred P. Murrah Federal Building in Oklahoma City , Oklahoma , or the Space Shuttle Columbia in the 2003 return-flight disaster .