Final answer:
Following an unfavorable security determination, a request to reestablish eligibility may be submitted after a reasonable passage of time, normally a minimum of six months after the concluding unfavorable determination either by PSAB if appeal rights were exercised.
Step-by-step explanation:
Following an unfavorable security determination, a request to reestablish eligibility may be submitted after a reasonable passage of time, normally a minimum of six months after the concluding unfavorable determination either by PSAB if appeal rights were exercised. This time frame allows for a period of reflection and reassessment of the individual's circumstances before seeking reestablishment of eligibility.