First time applicants (adults) must appear in person and present both photo identification and proof of U.S. citizenship. You will need to fill out the Form DS-11 “Application for a U.S. Passport”.  Additional evidence may be required depending on the circumstances of the original case. If the applicant was born in the U.S., he/she must present the passport used to depart the U.S. and to enter Equatorial Guinea, if not the same.