; and (2) if the alien will not attain 18 years of age before the end of the period described in paragraph (1), until the alien reaches 18 years of age. (b) Terms of conditional permanent resident status (1) Employment A conditional permanent resident may— (A) be employed in the United States incident to conditional permanent resident status under this Act; and (B) enlist in the Armed Forces of the United States in accordance with section 504(b)(1)(D) of title 10, United States Code, as added by section 13. (2) Travel A conditional permanent resident may travel outside the United States and may be admitted (if otherwise admissible) upon returning to the United States without having to obtain a visa if— (A) the alien is the bearer of valid, unexpired documentary evidence of conditional permanent resident status under this Act; and (B) the alien’s absence from the United States— (i) was not for a period of 180 days or longer, or for multiple periods exceeding 180 days in the aggregate; or (ii) was due to active service in the Armed Forces of the United States. (c) Termination of status (1) In general The Secretary shall immediately terminate the conditional permanent resident status under this Act of any alien who— (A) is 18 years of age or older if the Secretary determines that the alien is a postsecondary student who was admitted to an accredited institution of higher education in the United States, but failed to enroll in such institution within 1 year after the date on which the alien was granted conditional permanent resident status under this Act or to remain so enrolled; (B) is younger than 18 years of age if the Secretary determines that the alien enrolled in a primary or secondary school as a full-time student, but has failed to attend such school for a period exceeding 1 year during the 5-year period beginning on the date on which the alien was granted conditional permanent resident status under this Act