Greenwich AeroGroup has named Warren Persavich as president and CEO of Nasam. Previously he was senior v-p of part distribution for Banner Aerospace, another Greenwich AeroGroup company. Persavich replaces Nasam founder, president and CEO Aki Sato, who announced earlier this year that he would be stepping down at the end of the year after 31 years with the company. Nasam is an international distributor of high-tech electronics such as military/defense equipment, spacecraft sub-system and components, aircraft support equipment and products and telecom-related components.