a renewal to avoid paying a $35 execution fee. However, if the passport book or card holder is unable or unwilling to relinquish their currently valid passport for the duration of the processing, they may submit other primary evidence of citizenship, such as a U.S. birth certificate or naturalization certificate, and apply as a first time applicant, paying the execution fee and submitting a written explanation as to why they are applying in this manner. Additional fees An expedite fee of $60 is charged when applicants request faster processing, regardless of age. This processing is currently 2–3 weeks when applying at an acceptance facility. The same fee is charged for expedited service when applying at a Passport Agency within 14 days of travel. In addition to the expedite fee, applicants may pay an additional $17.56 to receive overnight mail return when their application has finished processing. This can be paid in combination with the application fee when applying, or added later by calling the National Passport Information Center. However, overnight mail return is only available for the U.S. Passport Book. Passport cards may not be overnight mailed. As of January 1, 2016, passports may no longer have pages added to them. When applying for a new passport, applicants may apply for a 28-page or 52-page passport, with no additional cost for obtaining the 52-page passport. Types Regular Passport (dark blue cover)Issuable to all citizens and non-citizen nationals. Periods of validity: for those age 16 or over, generally ten years from the date of issue; for those 15 and younger, generally five years from the date of issue. A sub-type of regular passports is no-fee passports, issuable to citizens in specified categories for specified purposes, such as an American sailor for travel connected with his duties aboard a U.S.-flag vessel. Period of validity: generally 5 years from the date of issue. A no-fee passport has an endorsement which prohibits its use for a purpose other than a specified purpose. Service (gray cover) Issuable to "certain non-personal services contractors who travel abroad in support of and pursuant to a contract with the U.S. government", to demonstrate the passport holder is travelling "to conduct work in support of the U.S. government while simultaneously indicating that the traveler has a more attenuated relationship with the U.S. government that does not justify a diplomatic or official passport." Period of validity: generally five years from the