Federal Agencies in NV Federal Agencies operating within NV. Federal Agencies in NV Bureau of ATF Reno, Washoe County Federal Bureau of Investigation Las Vegas, Clark County Federal Emergency Mgmt Agency Carson City, Carson City County Homeland Security Investigations (HSI) Las Vegas, Clark County Internal Revenue Service Las Vegas, Clark County US Marshals Service Las Vegas, Clark County US Secret Service Reno, Washoe County US Secret Service Las Vegas, Clark County
