; and (2) a clear duty for Federal law enforcement officers to intervene in cases where another law enforcement officer is using excessive force against a civilian, and establish a training program that covers the duty to intervene. (b) Mandatory training for Federal law enforcement officers The head of each Federal law enforcement agency shall require each Federal law enforcement officer employed by the agency to complete the training programs established under subsection (a). (c) Limitation on eligibility for funds Beginning in the first fiscal year that begins after the date that is one year after the date of enactment of this Act, a State or unit of local government may not receive funds under the Byrne grant program for a fiscal year if, on the day before the first day of the fiscal year, the State or unit of local government does not require each law enforcement officer in the State or unit of local government to complete the training programs established under subsection (a). (d) Grants To train law enforcement officers on use of force Section 501(a)(1) of title I of the Omnibus Crime Control and Safe Streets Act of 1968 ( 34 U.S.C. 10152(a)(1) ) is amended by adding at the end the following: (I) Training programs for law enforcement officers, including training programs on use of force and a duty to intervene. . 362. Ban on no-knock warrants in drug cases (a) Ban on Federal warrants in drug cases Section 509 of the Controlled Substances Act ( 21 U.S.C. 879 ) is amended by adding at the end the following: A search warrant authorized under this section shall require that a law enforcement officer execute the search warrant only after providing notice of his or her authority and purpose. . (b) Limitation on eligibility for funds Beginning in the first fiscal year that begins after the date that is one year after the date of enactment of this Act, a State or unit of local government may not receive funds under the COPS grant program for a fiscal year if, on the day before the first day of the fiscal year, the