Definition of AVAILABILITY. 1. : the quality or state of being available. 2. : an available person or thing.
Definition of EXECUTIVE OFFICER. : the officer second in command of a military or naval organization or vessel. ADVERTISEMENT. the officer second in command of a military or naval organization or vessel. ADVERTISEMENT.
Program executive officer. A program executive officer, or PEO, is one of a few key individuals in the United States military acquisition process. As can be seen from the examples below, a program executive officer may be responsible for a specific program, or for an entire portfolio of similar programs. The current program executive officers include