"Mission readiness" refers to the state of being well-prepared and fully equipped to successfully accomplish a specific task, goal, or mission. Full definition
Ensured mission readiness of 50 nuclear missiles and critical communication systems. (resumemycareer.com)
Responsible for developing, resourcing and executing the squad's various strength and training strategies to ensure mission readiness in both tactical and Garrison fields. (jobhero.com)
As a retired Air Force General from Mission Readiness mentioned in my interview with him last year: (thelunchtray.com)