John Brennan, assistant to the president for homeland security and counterterrorism; Sens. Joe Lieberman, Connecticut independent, and Susan Collins, R-Maine; Reps. Jane Harman, D-Calif., and Pete Hoekstra, R-Mich.

9 a.m.: WMDT (Channel 47)

10 a.m. WJLA (Channel 7)

10:30 a.m.: WMAR (Channel 2)

Journalists' roundtable.

10:30 a.m.: WUSA (Channel 9) and WJZ (Channel 13)

Brennan; former Homeland Security Secretary Michael Chertoff; former CIA director Michael Hayden; Doris Kearns Goodwin, presidential historian.

10 a.m.: WGAL (Channel 8), WBAL (Channel 11)

10:30 a.m.: WRC (Channel 4)

Brennan; former New Jersey Gov. Thomas Kean, chairman of 9/11 commission; Sens. Jim DeMint, R-S.C., and Claire McCaskill, D-Mo.; Fran Townsend, a former White House homeland security adviser for President George W. Bush; Richard Ben-Veniste, 9/11 commission member; former CIA official Michael Scheuer.

11 a.m.: CNN

Brennan; Sen. Kit Bond, R-Mo.

9 a.m.: WTTG (Channel 5), WPMT (Channel 43), WBFF (Channel 45)