 XXVI Hollywood, California 2008, Civil Protection MOU
XXV Puerto Peñasco, Sonora 2007
XXIV Austin, Texas 2006
XXIII Torreón, Coahuila 2005
XXII Santa Fe, New Mexico 2004
XXI Chihuahua, Chihuahua 2003
XX Phoenix, Arizona 2002
XIX Tampico, Tamaulipas 2001
XVIII Sacramento, California 2000
XVII Tijuana, Baja California 1999
XVI Brownsville, Texas 1998
XV Satillo, Coahuila 1997
XIIII Santa Fe, New Mexico 1996
XII Phoenix, Arizona 1994
VIII Austin, Texas 1990
VII Satillo, Coahuila 1989
II El Paso, Texas 1981
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