In this edition of Field Exchange we have a number of field articles that address very detailed programming issues. A field article by ACF deals with the experience of implementing the supplementary sucking technique (SST) for the many infants under six months presenting at therapeutic feeding units in Kabul, Afghanistan. Although the technique appears to lead to good outcomes when correctly applied, there were many instances where the SST was not well implemented. For example, many infants were considered cured when still mixed feeding and even where infants were discharged on breastmilk alone, mothers often reverted to mixed feeding at home.