Mayor Jackson should have a signal atop City Hall for just such emergencies:

https://youtube.com/watch?v=-drLdnk-g24%26hl%3Den%26fs%3D1%26rel%3D0%26color1%3D0x5d1719%26color2%3D0xcd311b%26border%3D1

This article appears in Apr 1-7, 2009.