There are 8 bands called Ground Zero:
These are photos from concerts where Ground Zero played, so they may be of other bands that played the concert as well.
Squid / Ground Zero / Vile / Floatice Dec 24, 2004 Shinjuku, Tokyo, Japan Uploaded by Fantomos
Floatice
Zao / Luti-Kriss / Killswitch Engage / Ground Zero / A Heart Fades Forever / Life In Your Way Jun 7, 2001 Meriden, Connecticut, United States Uploaded by Streetprophet83
Hatebreed / Death Threat / E-Town Concrete / Sworn Enemy / Ground Zero / Disowned Nov 11, 2000 Westfield, Massachusetts, United States Uploaded by Pedro Garcia