(1) The Secretary may temporarily, for not more than 45 days, suspend and take possession of the license, certificate of registry, or merchant mariners document held by an individual if
(A) that individual performs a safety sensitive function on a vessel, as determined by the Secretary; and
(B) there is probable cause to believe that the individual
(i) has, while acting under the authority of that license, certificate, or document, performed the safety sensitive function in violation of law or Federal regulation regarding use of alcohol or a dangerous drug;
(ii) has been convicted of an offense that would prevent the issuance or renewal of the license, certificate, or document;
(iii) within the 3-year period preceding the initiation of a suspension proceeding, has been convicted of an offense described in section
30304 (a)(3)(A) or (B) of title
49; or
(iv) is a security risk that poses a threat to the safety or security of a vessel or a public or commercial structure located within or adjacent to the marine environment.
