circumstances: (i) Certain alleged narcotics offenses The person is charged with an offense for which a minimum term of imprisonment of ten years or more is prescribed in the Controlled Substances Act ( 21 U.S.C. 801 et seq.), the Controlled Substances Import and Export Act ( 21 U.S.C. 951 et seq.), or chapter 705 of title 46, and the attorney for the Government proffers evidence sufficient to support a finding that the person is an organizer or leader in the offense or proves, by clear and convincing evidence based on individualized facts, that detention is necessary because the person’s release creates a specific and substantial risk that the person will cause bodily injury or use violent force against the person of another, and proves by clear and convincing evidence that no conditions of release could reasonably mitigate that risk. (ii) Firearms offenses The person is charged with any felony that involves the possession or use of a firearm or destructive device (as those terms are defined in section 921), or any other dangerous weapon. (iii) Crime of violence The person is charged with a crime of violence, as defined in section 924(c)(3)(A). (iv) Failure to register The person is charged with a failure to register felony offense under section 2250. (v) Non-appearance in court The attorney for the Government proves, by clear and convincing evidence based on individualized facts, that the person’s release creates a high risk of intentional non-appearance in court, and that no conditions of release could reasonably mitigate that risk. (vi) Obstruction of justice The attorney for the Government proves, by clear and convincing evidence based on individualized facts, that there is a high risk that the person will obstruct or attempt to obstruct justice, or threaten, injure, or intimidate, or attempt to threaten, injure, or intimidate, a prospective witness or juror, and that no conditions of release could reasonably mitigate that risk. (C) Legal standard for exceptions to immediate release The judicial officer may