Actually, MARSEC Levels are as follows:
Maritime Security (MARSEC) Level means
the level set to reflect the prevailing threat environment
to the marine elements of the national transportation
system, including ports, vessels, facilities, and critical
assets and infrastructure located on or adjacent to waters
subject to the jurisdiction of the U.S.
MARSEC Level 1 means the level
for which minimum appropriate protective security measures
shall be maintained at all times. This is the normal operating
MARSEC level for the port and is equivalent to YELLOW
(Elevated) in the Homeland Security Advisory System.
MARSEC Level 2 means the level
for which appropriate additional protective security measures
shall be maintained for a period of time as a result of
heightened risk of a transportation security incident.
This is equivalent to ORANGE (High) in the Homeland Security
Advisory System.
MARSEC Level 3 means the level
for which further specific protective security measures
must be maintained for a limited period of time when a
transportation security incident is probable or imminent,
although it may not be possible to identify the specific
target. This is equivalent to RED (Severe) in the Homeland
Security Advisory System.
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