It has visas and immigration stamping from the Philippines.
On the datapage, the holder was described as:
|ABROAD ON AN OFFICIAL ASSIGNMENT FOR THE UNITED STATES GOVERNMENT.
It has an interesting renewal stamping,
DIPLOMATIC REQUEST PAGE
|Unless otherwise specifically endorsed, this passport is not valid for travel to, in or through Communist controlled portions of
OR TO, IN OR THROUGH
TRAVEL TO, IN OR THROUGH THE LISTED AREAS OR COUNTRIES, OR ANY OTHER AREA OR COUNTRY SUBSEQUENTLY DESIGNATED BY THE SECRETARY OF STATE, WITHOUT A PASSPORT SPECIFICALLY VALIDATED FOR SUCH TRAVEL, IS GROUND FOR REVOCATION OR CANCELLATION OF THE PASSPORT OR DENIAL OF PASSPORT FACILITIES (SECTION 51.74, TITLE 22, CODE OF FEDERAL REGULATIONS).
|I, the undersigned, the Secretary of State of The United States of America hereby request all whom it concern to permit the citizen(s) of the United States named herein to pass without delay or hindrance and in case of need to give said citizen(s) all lawful aid and protection.
[Signature: Dean Rusk]