; and (3) shall not be granted unless the Administrator determines such a renewal to be appropriate based on the results of the evaluation conducted under section 523(a) with respect to the community of such unit or tribe for which a PROMISE Coordinating Council was established, and for which such unit or tribe is applying for renewal. 323. Reports Not later than one year after the end of the grant period for which a unit of local government or an Indian tribe receives a PROMISE Implementation grant, and annually thereafter for as long as such unit or tribe continues to receive Federal funding for a PROMISE Coordinating Council, such unit or tribe shall report to the Administrator regarding the use of Federal funds to implement the PROMISE Plan developed under subtitle A. 324. Authorization of appropriations There are authorized to be appropriated to carry out this subtitle such sums as may be necessary for each of the fiscal years 2018 through 2020. C General PROMISE Grant Provisions 330. Nonsupplanting clause A unit of local government or Indian tribe receiving a grant under this title shall use such grant only to supplement, and not supplant, the amount of funds that, in the absence of such grant, would be available to address the needs of youth in the community with respect to evidence-based and promising practices related to juvenile delinquency and criminal street gang activity prevention and intervention. 331. Grant application review panel The Administrator of the Office of Juvenile Justice and Delinquency Prevention, in conjunction with the PROMISE Advisory Panel, shall establish and utilize a transparent, reliable, and valid system for evaluating applications for PROMISE Assessment and Planning grants and for PROMISE Implementation grants, and shall determine which applicants meet the criteria for funding, based primarily on a determination of greatest need (in accordance with section 402), with due consideration to other enumerated factors and the indicated ability of the applicant to successfully