; (2) the number of individuals and crews trained to perform communications tower service, construction, maintenance, and structural modification using grant funds; and (3) the number of communications towers on which service, construction, maintenance, or structural modification was performed by individuals or crews while participating in job training programs receiving grant funds. (e) Definitions In this section: (1) Communications tower The term communications tower means a structure that transmits broadcast radio signals, commercial mobile service (as defined in section 332) signals, or commercial mobile data service (as defined in section 6001 of the Middle Class Tax Relief and Job Creation Act of 2012 ( 47 U.S.C. 1401 )) signals. (2) Covered entity The term covered entity means— (A) a junior or community college (as defined in section 312(f) of the Higher Education Act of 1965 ( 20 U.S.C. 1058(f) )); (B) a postsecondary vocational institution (as defined in section 102(c) of the Higher Education Act of 1965 ( 20 U.S.C. 1002(c) )); (C) an area career and technical education school (as defined in section 3 of the Carl D. Perkins Career and Technical Education Act of 2006 ( 20 U.S.C. 2302 )); or (D) any organization that provides career and technical education (as defined in such section) to veterans (as defined in section 101 of title 38, United States Code). (f) Authorization of appropriations There is authorized to be appropriated to carry out this section $20,000,000 for each of the fiscal years 2019 through 2021. Amounts appropriated under this subsection are authorized to remain available until expended. .