Section 9
And be it further enacted, That, upon affidavit made by the claimant of such fugitive, his agent or attorney, after such certificate has been issued, that he has reason to apprehend that such fugitive will he rescued by force from his or their possession before he can be taken beyond the limits of the State in which the arrest is made, it shall be the duty of the officer making the arrest to retain such fugitive in his custody, and to remove him to the State whence he fled, and there to deliver him to said claimant, his agent, or attorney. And to this end, the officer aforesaid is hereby authorized and required to employ so many persons as he may deem necessary to overcome such force, and to retain them in his service so long as circumstances may require. The said officer and his assistants, while so employed, to receive the same compensation, and to be allowed the same expenses, as are now allowed by law for transportation of criminals, to be certified by the judge of the district within which the arrest is made, and paid out of the treasury of the United States.