Section 16 of the SF-86 asks for three people who know you well and whose combined association with you covers at least the last seven years. Choose a group that provides continuous time coverage, collectively knows your life outside formal settings, has accurate contact information, and complies with the form’s exclusions. A prestigious title is not one of the tests.

How should you choose SF86 people who know you well?

Apply four tests in order: individual eligibility, combined time coverage, the group’s outside-life knowledge, and usable contact details. A candidate who fails an exclusion cannot be rescued by a long friendship. A qualified person who adds no missing time or context may be less useful than another eligible contact.

The OPM SF-86 prints the selection language in Section 16. It asks for three people who know you well, preferably live in the United States, collectively know your activities outside your workplace, school, or neighborhood, and have a combined association with you covering at least the last seven years.

Translate that instruction into a screening sequence:

1. Eligible: Is the person outside every prohibited category and absent from every other answer on the form?
2. Coverage: Does the person fill part of the required period, including any early or recent gap?
3. Knowledge: What activities does the person know firsthand, and does the group collectively cover your life outside the workplace, school, or neighborhood?
4. Reachability: Can you enter accurate dates and current contact details instead of guessing?

This is a preparation method, not a government rating formula. Section 16 does not award points for rank, clearance level, occupation, or social status. The best choice is the person who satisfies the printed instruction and improves the group’s factual coverage.

How do three contacts cover the required period?

Build one continuous timeline across the group. The form says the contacts’ combined association must cover the period. It does not say each person must have known you for all seven years, and overlapping acquaintance periods do not extend the timeline merely because they can be added together.

Start at the beginning of the lookback period and move toward the present. Mark when each candidate actually knew you, using month and year. If your oldest friend covers the early part, a former roommate covers the middle, and a current friend reaches the present, the group may form a continuous chain even though no single person spans it all.

Do not confuse addition with coverage. Several recent contacts can have many total years of acquaintance between them while all leaving the same older interval empty. Conversely, one long-term friend can cover much of the period while other contacts add current knowledge and a different part of your life.

The general distinction between people used in different form sections is covered in the overview of security clearance verifiers and SF-86 references. Every name you choose should fill a real cell in your coverage plan.

What should go in your contact coverage grid?

Give each candidate a row and test the group before entering anyone in eApp. Record the acquaintance period, outside-life contexts they personally know, whether their name appears elsewhere, and whether every requested contact field has been confirmed. Select only after the grid shows continuous coverage and no exclusion.

These candidate labels are examples, not preferred categories. The form itself lists friends, peers, colleagues, college roommates, and associates as possibilities. Each person must know you well and pass the individual exclusions; test time coverage and outside-setting awareness across the group.

Who knows your life beyond one institution?

Choose firsthand familiarity over impressive credentials. A person who knows only your work product is a weak fit because each contact must know you well. DCSA says not to list coworkers unless you have regular social contact with them outside work. A colleague who is also a social friend can fit when that person is not listed elsewhere and strengthens the group’s coverage.

“Outside” does not require dramatic social activity. Someone may know your ordinary routines, interests, household patterns, friendships, volunteering, recreation, or community participation. The useful question is not whether the candidate can praise you. It is whether the candidate knows you well enough, in a context the form requests, to speak from memory.

Avoid selecting three people from the same narrow slice of life merely because they are convenient. The form does not expressly require different settings, but a varied group can cover periods and contexts that one cluster cannot. Treat diversity of knowledge as a practical coverage advantage, not a separate federal rule.

Whom must you remove from the candidate list?

Remove your spouse, any former spouse, children, cohabitants, other relatives, and anyone named elsewhere on the questionnaire. That last exclusion reaches a person used as a supervisor, residence verifier, education contact, or another required entry. Review the whole draft before finalizing Section 16.

This is a disqualification screen, not a preference. If a trusted friend also appears in another section, do not reuse that person here. The detailed discussion of relatives, references, and verifiers on the SF-86 explains the role boundaries; your grid should simply mark the name unavailable for Section 16.

Do the exclusion check before evaluating who sounds most credible. Otherwise, you may build the timeline around a name you later have to remove. Keep alternate candidates in the grid until the rest of the questionnaire is complete, because a person not used elsewhere at first may appear in a later answer.

How should you balance older history with current knowledge?

Use the oldest eligible contact to anchor the beginning of the period, then test whether the remaining choices reach the present and add current firsthand knowledge. Longevity and recency solve different coverage problems. The group should not leave either end unsupported.

An old friend is not automatically sufficient if the relationship ended long ago and the other choices do not cover the intervening period. A current friend is not automatically sufficient if everyone in the group met you recently. Enter honest start and end dates; do not stretch an acquaintance backward to make the chart work.

Contact frequency is not a field printed in this section of the posted questionnaire. Do not invent a frequency requirement. Still, when two candidates otherwise fill the same interval, the person with clearer, more current firsthand knowledge may be easier to describe accurately.

Which details should you verify before entering a name?

Confirm the dates known, relationship, full name, email address, rank or title when applicable, telephone number, mobile number, and home or work address. The form offers “I don’t know” for some contact fields, but the eApp guide advises avoiding “I do not know,” “Unknown,” and “Not Applicable.”

Before naming someone, ask them to confirm the spelling of their full name, their preferred email and phone number, and the address they want you to use. Separately, reconstruct when you met and when the association ended, if it ended. If a required detail remains unavailable, ask your sponsoring contact how to enter it.

Reachability is a practical filter because Section 16 asks for multiple ways to locate the person. It is not a promise that every named contact will receive a call, letter, or visit. For what a contacted person may encounter, use the separate explanation of what investigators ask SF-86 references rather than trying to script an answer.

What if an older guide says ten years?

The OPM SF-86 and DCSA’s November 2025 SF-86 guide say the three contacts should completely cover the last seven years. An older eApp guide, version 2 dated November 29, 2023, says the association should cover at least ten years.

The older Subject eApp Guide for SF86 repeats the outside-life and exclusion tests but prints the longer period. The official eApp help page describes that guide as an additional aid and points applicants to the Instructions link after login.

Use the exact period your live questionnaire requests. If the on-screen wording is unclear or differs from the posted form, ask the security officer, human-resources contact, or facility security officer connected to your submission. Keep a grid broad enough to cover the longer period when you have eligible contacts, but never alter dates known to force a result.

When should you replace a weak contact?

Replace a candidate who is prohibited, already used elsewhere, leaves an uncovered time gap, or cannot be entered accurately. Then test the three-person group as a whole for awareness of your activities outside the workplace, school, or neighborhood. One contact’s knowledge may come from a single setting if the group collectively satisfies the instruction. Do not try to fix a defect by emphasizing the person’s job title or asking for a favorable statement.

If the problem is a missing current phone number, first ask the person to confirm it. If the group does not collectively know your activities outside those formal settings, choose a person whose knowledge fills that gap. If removing one name opens a time gap, return to the full candidate list rather than stretching the dates of the remaining contacts.

Before submission, compare the grid with the entire questionnaire one last time. A sponsoring agency may return a form for errors or missing information, and an investigator may later ask you to verify, expand, or clarify what you entered. Accurate selection now gives you a clean record to explain later.

Frequently Asked Questions

Does each SF-86 contact need to know me for seven years?

No. The posted Section 16 instruction applies the period to their combined association with you. Build continuous coverage across the group and make sure the earliest required interval and the present are both covered.

Can I list a coworker?

Only if you also see that person socially. DCSA’s current SF-86 guide says not to list coworkers unless you have regular social contact outside work. The form itself lists colleagues as an option and requires the three contacts together to know your activities outside the workplace, school, or neighborhood.

Can I use my current neighbor?

Section 16 includes “neighbor” as a relationship choice, but the person must know you well and cannot be listed elsewhere. Test outside-setting awareness across all three contacts. If that neighbor is already your residence verifier, choose another Section 16 contact.

Should I choose the person with the highest title?

No title-based preference appears in the Section 16 instruction. Choose the eligible person who contributes real time coverage, direct knowledge, and accurate contact details.

What should I do immediately before submitting the three names?

Call each of your three proposed contacts, confirm the dates and current details you plan to enter, then search the full questionnaire once for duplicate names before you submit.