There are three types of statuses for a security clearance.
Active – Present job requires use of a security clearance.
Current – Had a job in the past two years that required use of a clearance.
Expired – More than two years since that person had a job that required a clearance.
https://militarybenefits.info/security-clearance-jobs-after-the-military/
Admiral McRaven retired from the navy on August 28, 2014, after more than 37 years of service.
https://en.wikipedia.org/wiki/William_H._McRaven
Seems like that was more than 2 years ago.