Updated

TENSION IN THE PACIFIC 

North Korea may soon conduct its sixth nuclear test in the face of the United States' decision to move a carrier group toward the region.

Satellite imagery shows activity at the Punggye-ri testing site, analysts from 38 North, a U.S. research institute that monitors North Korea, wrote on its website Wednesday.

Foreign journalists inside the country were told to prepare for a "big and important event" Thursday, Reuters reported. (WATCH FOX NEWS CHANNEL'S GREG PALKOT'S LATEST REPORT AT 9 AM ET) 

'TUCKER CARLSON TONIGHT': ANN COULTER SAYS TRUMP'S DECISION TO STRIKE SYRIA HAS BAFFLED SOME 

TUCKER TO STRATEGIST: SINCE WHEN ARE DEMS THE PARTY OF WAR?

HANNITY: WORLD LEADERS NOTICE THERE'S A NEW SHERIFF IN TOWN

FAST AND FURIOUS

The cartel member suspected of shooting and killing Border Patrol agent Brian Terry in 2010 with a gun supplied by the U.S. government was arrested in Mexico Wednesday, senior law enforcement, Border Patrol, and congressional sources told Fox News. The suspect, Heraclio Osorio-Arellanes, was apprehended by a joint U.S.-Mexico law enforcement task force that included the Drug Enforcement Administration, U.S. Marshals and the Border Patrol Tactical Unit (BORTAC).

UNITED FALLOUT

All of the customers who were on the United Airlines flight that involved police officers dragging a passenger off the aircraft over the weekend will be fully reimbursed, the airline said Wednesday. United spokeswoman said in a statement to Fox News the airline "will be providing full compensation for the price of their ticket for all passengers on United Flight 3411."

COMING UP: 11 AM ET: AVIATION ATTORNEY AND FAMILY OF DR. DAO TO SPEAK TO THE MEDIA. WATCH LIVE ON FOX NEWS CHANNEL AND FOXNEWS.COM

'THE O'REILLY FACTOR': INVESTIGATES, ASSESSES RESPONSE

FOX NEWS OPINION

JUDGE NAPOLITANO writes that Syria is not a threat to the U.S., nor is it likely to become one. Nor is the argument that we needed to send a message to Syria lest it use poison gas on the U.S. a valid legal argument or a realistic political one.

COMING UP ON FNC 

1 PM ET: White House press briefing with Sean Spicer. Watch live on FoxNews.com and Fox News Channel.

COMING UP ON FOX BUSINESS

8:30 AM ET: Former Morgan Stanley CEO John Mack to be on "Mornings With Maria."

11:15 AM ET: REP. Ron Estes, R-Kan., to be on Stuart Varney's guest on "Varney & Company."

NOON: Jens Stoltenberg, NATO secretary general, to be on "Cavuto Coast to Coast"