Guam CEDDERS Presents Resources to GEIS by Guam CEDDERS Sherry Guerrero (right), Guam CEDDERS Media Specialist, presented resources to encourage language development to Camille Onglao Gonzales (left), representing Guam Early Intevention System (GEIS) on May 18. The resources, which included board books, flash cards, and DVDs on sign language, will be shared with families with young children identified as having a hearing loss. Community Services: Technical Assistance