UK ISAR (International Search and Rescue)

The provided articles do not contain information about UK ISAR (International Search and Rescue). The snippets focus on the aftermath of earthquakes in Venezuela, mentioning the involvement of individuals like Israel Rivas and rescue efforts by the Los Angeles County Fire Department. There is no mention of UK ISAR's activities, background, or current relevance in these specific news items. Therefore, a comprehensive summary of UK ISAR based solely on this provided text cannot be generated.