Veteran newscaster John Gibson gets to the core of the most salient issues facing America today as host of FNC's hard-hitting primetime show The Big Story with John Gibson, airing Monday through Friday at 5 p.m. ET, with expert legal analysis from Judge Andrew Napolitano and in-depth field reports from correspondent Heather Nauert.

Monday, May 31:

What's the biggest challenge facing our troops in Iraq?
• Retired Army Col. Glenn Lackey 

What is Al Qaeda trying to accomplish in Saudi Arabia?
Walid Phares, terrorism expert

Will there be any surprises in Scott Peterson's trial?
Lis Wiehl, FNC legal analyst

Will warnings of possible terror attacks hurt tourism in major U.S. cities?
Cristyne Nicholas of NYC and Co.

Be sure to tune into The Big Story with John Gibson ... weekdays at 5 p.m. ET.

Topics and guests subject to change.