1. Short title This Act may be cited as the Vietnam Helicopter Crew Monument Act . 2. Placement of monument honoring helicopter pilots and crewmembers who were killed while serving on active duty in the Armed Forces during the Vietnam era (a) In general Subject to the requirements of subsection (c), the Secretary of the Army shall place in Arlington National Cemetery a monument honoring helicopter pilots and crewmembers who were killed while serving on active duty in the Armed Forces during the Vietnam era. (b) Design The monument placed under subsection (a) shall measure 4 feet in height, 5 feet in width, and 1 foot in depth, and shall be based on a design approved by the Secretary of the Army and the Vietnam Helicopter Pilots Association. (c) Agreement for construction and maintenance The Secretary of the Army may only place a monument under subsection (a) if the Secretary enters into an agreement with the Vietnam Helicopter Pilots Association under which the Association agrees to pay all costs necessary for preparation of the site for the monument (including the activities authorized under subsection (d)(2)) and to construct, install, and maintain the monument, and to such other provisions as the Secretary may require. (d) Site and replacement of existing memorial (1) In general The monument described in subsection (a) shall be placed where the Vietnam Helicopter Pilots Association Memorial Tree stood on the day before the date of the enactment of this Act. (2) Removal of existing memorial In placing the monument described in subsection (a) in the place specified in paragraph (1) of this subsection, the Secretary of the Army may remove the Vietnam Helicopter Pilots Association Memorial Tree that was in such location on the day before the date of the enactment of this Act.