I agree with geonuc. It doesn't matter much if one has only a few friends. They, the investigators, will talk to the ones you do have. It is important though that candidates for a clearance are well-adjusted socially, and the investigator may stop and ask himself whether your lack of many friends could be indication of some bigger problem. But if those to whom the investigator speaks give no hint of anything wrong, you should be fine.... For more information on security clearances, how they work and how to get them, and what others have to say about them, visit www.clearedcommunity.com.