MEEHANGROUP: Yes, they require specialized skills sets and qualifications, NOT JUST a JD degree from a law firm and bilingual skills. Experience counts. I have 20+ years of that. There is no such thing as Dept of Defense ‘secret’ clearance. Clearance is clearance. We are talking about litigation so I believe this author meant dept of justice clearance. Anyway, they must be updated each year like dept of justice prison-entry clearance which is renewed every year and you need a practicing lawyer to sponsor you to file this clearance and to renew this clearance. Same with all other government clearance. If you don’t use it, THEY EXPIRE naturally.