; and (B) obtain necessary information or documentation from third parties, including public agencies; and (2) may not abandon the benefit claim unless the Bureau has used the investigative tools available to the Bureau to obtain the necessary information or documentation, including subpoenas. . 6. Educational assistance to dependents of public safety officers killed or disabled in the line of duty Section 1216(b) of title I of the Omnibus Crime Control and Safe Streets Act of 1968 ( 34 U.S.C. 10306(b) ) is amended, in the first sentence, by striking may and inserting shall .