637 If a transaction covered by clause (1) or (2) is part of a project, the agreement must be based on the general plan for that project, including an estimate of the total cost of the lands to be acquired or leases to bo mnde. (b) The Administrator shall report quarterly to the Committees on Armed Services of the Senate and the House of Representatives on transactions described in subsection (a) that involve an estimated value of more than $5,000 but not more than $25,000. (c) This section applies only to real property in the United States, Alaska, Hawaii, and Puerto Rico. I t does not apply to real property for river and harbor projects or flood-control projects, or to leases of Government-owned real property for agricultural or grazing purposes. (d) A statement in an instrument of conveyance, including a lease, that the requirements of this section have been met, or that the conveyance is not subject to this section, is conclusive. APPOINTMENTO F UNITED STATES M I L I T A R Y ACADEMY GRADUATES IN AIR FORCE SEC. 44. (a) Notwithstanding any other provision of law, a cadet who graduates from the United States Military Academy may, upon graduation and before the effective date of section 541 of title 10, United States Code, be appointed a second lieutenant in the Regular Air Force. (b) Notwithstanding any other provision of law, no person who was a cadet at the United States Military Academy may be originally appointed in a commissioned grade in the Regular Air Force under this section before the date on which his classmates at the Academy are graduated and appointed as officers. No person who was a cadet at, but did not graduate from, the Academy may be credited, upon appointment as a commissioned officer of the Regular Air Force, with longer service than that credited to any member of his class at the Academy whose service in the Air Force, or in the Army and the Air Force, has been continuous since graduation. (c) A graduate of the United States Military Academy who is originally appointed a second lieutenant in the Regular Air Force under this section is not entitled to any service credit under this section. (d) Rank among graduates of each class of the United States Military Academy who, upon graduation, are appointed in the Regular Air Force under this section shall be fixed under regulations prescribed by the Secretary of the Air Force. (e) The authorized strength in any regular grade is automatically increased to the minimum extent necessary to give effect to each appointment made under this section. An authorized strength so increased is increased for no other purpose, and while he holds that grade the officer whose appointment caused the increase is counted for the purpose of determining when other appointments, not under thia section, may be made in that grade.