Ms. Darlene Costello, a member of the Senior Executive Service, is the Principal Deputy Assistant Secretary of the Air Force (Acquisition & Logistics). She is the Air Force’s Service Acquisition Executive, responsible for all Air Force research, development and acquisition activities. Her duties include providing expert advice and guidance on Air Force acquisition programs and procurements. Ms. Costello is also responsible for the development and execution of policies and procedures in support of the operation and improvement of the Air Force’s acquisition system.
Ms. Costello has held acquisition positions of increasing responsibility and at all levels of command. Within the Department of the Navy, she held positions as a project engineer, assistant design manager, and program manager.