mormon breakaway sects, sub-sects and fundamentalist groups sometimes hold the belief that their particular church alone can claim true authority and succession from joseph smith, and that other lds denominations are therefore incorrect or heretical. thus many sites throughout the united states represent the spiritual headquarters' of these churches: for example, the yfz ranch in eldorado, texas at one time represented the fundamentalist church of jesus christ of latter-day saints (flds) and the apostolic united brethren (aub) base themselves in bluffdale, utah.