Arizona, USA-Prayer vigil for migrants who died crossing the border. Healing Our Borders prayer vigil remembering migrants who died crossing the US-Mexico border. Three hundred bodies have been recovered in the Sulphur Springs Valley of Cochise County, Arizona. The vigil is held weekly at the international border crossing, organized by Frontera de Cristo. David Bonilla of Frontera de Cristo, a Mennonite, holds a cross representing a deceased migrant who could not be identified.