Section 101.300 - Preparedness communications(a)Notification of MARSEC Level change. The COTP will communicate any changes in the MARSEC Levels through a local Broadcast Notice to Mariners, an electronic means, if available, or as detailed in the AMS Plan.(b)Communication of threats. When the COTP is made aware of a threat that may cause a transportation security incident, the COTP will, when appropriate, communicate to the port stakeholders, vessels, and facilities in his or her AOR the following details:(1) Geographic area potentially impacted by the probable threat;(2) Any appropriate information identifying potential targets;(3) Onset and expected duration of probable threat;(4) Type of probable threat; and(5) Required actions to minimize risk.(c)Attainment.(1) Each owner or operator of a vessel or facility required to have a security plan under parts 104 or 105 of this subchapter affected by a change in the MARSEC Level must ensure confirmation to their local COTP the attainment of measures or actions described in their security plan and any other requirements imposed by the COTP that correspond with the MARSEC Level being imposed by the change.(2) Each owner or operator of a facility required to have a security plan under part 106 of this subchapter affected by a change in the MARSEC Level must ensure confirmation to their cognizant District Commander the attainment of measures or actions described in their security plan and any other requirements imposed by the District Commander or COTP that correspond with the MARSEC Level being imposed by the change.USCG-2003-14792, 68 FR 39278, July 1, 2003, as amended at 68 FR 60472, Oct. 22, 2003