The Coast Guard and other agencies will enforce a security zone in waters off the airport during the hours surrounding the president’s expected arrival and departure times Friday and Saturday.

The security zone on waters off Daniel K. Inouye International Airport is to ensure the safety of a distinguished visitor, the Coast Guard said in a news release today, while not referring to the president by name. President Donald Trump is expected to arrive early Friday afternoon.

The security zone will go into effect from 11 a.m. to 3 p.m. Friday and from 5:30 a.m. to 9:30 a.m. Saturday.

The Coast Guard is coordinating efforts to patrol the area with the Honolulu Police Department and other federal, state and county law enforcement agencies under the direction of the U.S. Secret Service.

To the north of the airport, the security zone encompasses all waters surrounding the airport within Keehi Lagoon. To the south, it includes waters from 21 degrees 18 minutes north latitude and 157 degrees 55.58 minutes west longitude east to Kalihi Channel Buoy No. 5 and all waters south to roughly two miles offshore. This includes anchorages B, C and D.

Federal law prohbitis any unauthorized person or vessel from entering or remaining in the security zone. Violators will be subject to a maximum penalty of $90,063 or up to 25 years in prison and a maximum $250,000 fine. Vessels can be seized and held liable for monetary assessments.