January 2006 marked the beginning of the long-awaited ACS and Puerto Rico Community Survey (PRCS) group quarters (GQ) data collection. Interviewing began last month after a number of tests that occurred in 1999 and 2001 in the ACS test sites, and field-testing of revised GQ methods last February and March in the Baltimore-Washington, DC area. GQ data collection includes all types except domestic violence shelters, soup kitchens, regularly scheduled mobile food vans, targeted non-sheltered locations, natural disaster shelters, transient locations (such as RV campgrounds, marinas, and military hotels), dangerous encampments, and maritime vessels.