Today on "Special Report":

U.S. Marines engage in an intense firefight with insurgents in a northern district of the besieged city of Fallujah (search) -- Stay with us for the latest breaking developments.

GUEST PREVIEW: Did Democratic presidential hopeful John Kerry (search) toss out some of his wartime honors? And what is the significance of such honors? For answers, we'll turn to Retired U.S. Marine Corps Lt. Col. Bill Cowan, FNC military analyst.

Carl Cameron reports: John Kerry rejects questions about Navy medals he is said to have thrown away. Get a full report.

Jim Angle reports: Dick Cheney challenges Kerry's Senate record, saying he's guilty of 'irresponsible' voting. We'll give the details.

Brian Wilson reports: Incumbent Sen. Arlen Specter fights for his political life against rival Pat Toomey. Stay with us for the latest.

Catherine Herridge reports: Does the Islamic group Hamas (search) have a terror hub right here in the U.S.? We'll have answers.

Details on those stories and more on Special Report with Brit Hume at 6 p.m. ET.

— Guests and topics are subject to change