The toughened security measures include checking electronic devices for possible explosives and pulling more people out of airport security lines for more extensive screening.
Restrictions are no longer in effect for the last of 10 airports with US bound flights that had a ban on electronic devices.
One of the U.S. Coast Guard's most important responsibilities in Southern California is protecting the ports of Los Angeles and Long Beach.
The United States has ended the ban on large electronics in the cabins of airlines that it announced in March.
DHS spokesman David Lapan said that as of midnight Wednesday, the 180 airlines flying to USA destinations, including United States carriers, and 280 airports that have direct flights to the U.S., had all implemented the first phase of tough new security protocols announced by USA authorities on June 28.
Netanyahu speaks with King Abdullah in bid to resolve crisis
Israel installed metal detectors at entrances to the site following an attack nearby on July 14 that killed two of its policemen. Senior Jordanian officials told the Jordan's Al-Rai newspaper that Jordanian police is still demanding to interrogate the guard.
But this isn't the end for scrutiny of devices on airplanes.
A temporary ban on large electronics in carry-on luggage on flights to the USA from eight countries announced in March came after an explosive destroyed an airplane during a test, Homeland Security Secretary John Kelly said Wednesday. And to say the least, it destroyed the airplane.
And Kelly says every single airport, including the 10 in the Middle East and North Africa subjected to the initial laptop ban, now meet those initial requirements to enhance security across the board.
The 10 airports targeted by the ban have since implemented the new security measures required since March by the US ban, as verified by USA officials.
Last week, the USA government revised its security directive, which also include additional requirements that must be met within 120 days.