Historic Preservation Office specialist John Diego Palacios, Tinian technician Michael H. Lizama, and Community Development Specialist Roy C. Sablan stand before one of the historic NMI latte sets at the San Isidro Latte Site on Tinian . This latte set is one of three known naturally standing upright lattes in the NMI, the other two are at the House of Taga, Tinian and in Alaguan Bay , Rota . The HPO are performing Global Positioning System plotting and photo documentation of historic sites for mapping, database, and publication purposes.