Joseph and Summer McStay and their two children have n't been seen since 2010 . Score: 6 The family 's abandoned SUV was found near the Mexican border . The sheriff 's department will continue participating in the investigation in a supporting role . '' A surveillance video shows what appears to be them crossing the border .
Joseph and Summer McStay and their two children have n't been seen since 2010 . Score: 6 The family 's abandoned SUV was found near the Mexican border . A surveillance video shows what appears to be them crossing the border .