This is a surprisingly complex area, however, the point of contact for assistance on this matter is the U.S. State Department at 1-202-647-6575. A general information help line, called First Government is also available at: 1-800-375-5283.

You may get a new Certificate of Naturalization by submitting an "Application for Replacement Naturalization/Citizenship Document" (called Form N-565) to XXXXX may call the Forms Line 1(NNN) NNN-NNNNto request Form N-565.

Submit this form with the fee to your local USCIS office. It may take up to one year for you to receive a new certificate. If you have one, you may use your passport as evidence of citizenship while you wait for a replacement certificate.

If you don't already have a passport, it may be good to get one as another means of easily documenting your citizenship. It also appears that you should be able to obtain a U.S. passport with an original copy of your birth certificate is you have one: for more information on passports, visit the U.S. Department of State's website, http://travel.state.gov/passport.

Since you allude to Travis AFB processing your paperwork, it may be that your birth certificate was issued by California when travis processed your naturalization paperwork. If so it would have been through the California Office of Vital records for Solano County. Solano County California (Office of vital records:(NNN) NNN-NNNN Hours : Monday thru Friday 8am to 4pm). Birth certificates may be ordered online through: http://www.vitalchek.com/agency_locator.aspx?providerid=15963

Alternatively, if one or both of your parents was a U.S. citizen when you were born abroad, your parent(s) should have registered your birth at a U.S. embassy or consulate, and, received a Consular Report of Birth Abroad , Form FS-240. This form is acceptable legal proof of birth and U.S. citizenship.

But if you do not have a birth certificate issued in California and because you were born outside the U.S. and your U.S. parent(s) did not register your birth at the U.S. embassy or consulate, you may still apply for a U.S. passport. You will need:
Your foreign birth certificate that includes your parents' names; and Evidence of your parent(s) U.S. citizenship;
and Your parents' marriage certificate.