; or (2) one year after date on which the final recommendation required by subsection (e)(2) is submitted by the Director. (e) Report; recommendation (1) In general Not later than two years after the date of the enactment of this section and annually thereafter until the Program terminates pursuant to subsection (d), the Director shall submit to Congress a report on the implementation of the Program, including an evaluation of each technology-based mitigation solution identified for priority consideration pursuant to subsection (c), and a recommendation regarding additional identification and testing of new technologies based on such consideration. (2) Final recommendation Not later than five years after the date of the enactment of this section, the Director shall provide to Congress a recommendation on whether additional research, testing, and development through the Program established under subsection (a) is needed, and a determination of whether a cessation of field research, development, testing, and evaluation is appropriate. (f) Definitions In this section: (1) Beam blockage The term beam blockage means a signal that is partially or fully blocked due to an obstruction. (2) Director The term Director means the Director of the National Weather Service. (3) Ghost echo The term ghost echo means radar signal reflectivity or velocity return errors in radar data due to the close proximity of an obstruction. (4) Obstruction The term obstruction includes— (A) a wind turbine that could limit the effectiveness of a weather radar system; and (B) any building that disrupts or limits the effectiveness of a weather radar system. . (b) Clerical amendment The table of sections in section 1(b) of the Weather Research and Forecasting Innovation Act of 2017 is amended by inserting after the item relating to section 414 the following new item: 415. Radar obstruction Research, Development, Test, and Evaluation Program. .