CNN's Brian Todd, Pam Benson, Mike Mount and David Mattingly contributed to this report.

CNN: Investigators look for missed signals in Fort Hood probe

CNN's Tom Cohen, Brian Todd, Paul Courson, Dana Bash and Shasta Darlington contributed to this report.

CNN: Secret Service changes its rules after scandal

CNN's Josh Levs, Brian Todd, Dugald McConnell, Christine Sever and Shawn Nottingham contributed to this report.

CNN: Snowmobiler Caleb Moore dies a week after crash

CNN's Saad Abedine, Anna Maja Rappard, Brian Todd, Nic Robertson and Joe Sterling contributed to this report.

CNN: STORY HIGHLIGHTS

CNN's Ashleigh Banfield, Drew Griffin, Dave Alsup, Carol Cratty, Brian Todd and Barbara Starr contributed to this report.

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CNN's Deanna Hackney, Stan Wilson, Dugald McConnell, Shawn Nottingham, Emily Blakemore and Brian Todd contributed to this report.

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CNN's Ed Lavandera, Matt Smith, Dana Ford, Chad Myers, Joe Sutton and Brian Todd contributed to this report.

CNN: STORY HIGHLIGHTS

CNN's Susan Candiotti, Deborah Feyerick, Carol Cratty, Jake Tapper, Brian Todd, Pamela Brown and Kathleen Johnston contributed to this report.

CNN: 3 more detained in Boston attack

CNN's Drew Griffin, Carol Cratty, Nick Paton Walsh, Brian Todd, Barbara Starr, Susan Candiotti and Greg Botelho contributed to this report.

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CNN's Susan Candiotti, Deborah Feyerick, Gloria Borger, Carol Cratty, Jake Tapper, Brian Todd, Pamela Brown and Kathleen Johnston contributed to this report.

CNN: Bomb suspect's buddies covered for him, feds say

CNN's Ben Wedeman, Ben Brumfield, Marilia Brocchetto, Sarah Brown, Dugald McConnell, Brian Todd, Claudia Rebaza and Jason Hanna also contributed to this report.

CNN: March 19, 2013 -- Updated 1407 GMT (2207 HKT)

CNN's Holly Yan, Matt Smith, Rose Arce, Chandler Friedman, Poppy Harlow, Brian Todd, Tory Dunnan, Martin Savidge, Justin Lear and Laura Ly contributed to this report.

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CNN's Matt Smith, Tom Watkins, Susan Candiotti, Deborah Feyerick, Gloria Borger, Carol Cratty, Jake Tapper, Brian Todd, Pamela Brown and Kathleen Johnston contributed to this report.

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CNN's Carol Cratty, Briana Keilar, Brian Todd, Bob Kovach, John King, Barbara Starr, Deirdre Walsh, Rafael Romo, Jessica Yellin and Tom Cohen contributed to this report.

CNN: STORY HIGHLIGHTS

CNN's Tom Laabs and Brian Todd contributed to this report.

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CNN's Brian Todd and Dugald McConnell contributed to this report.

CNN: Both sides using Rove's campaign strategy this year

CNN's Erin McLaughlin and Brian Todd contributed to this report.

CNN: Air travel security under review, officials say

CNN's Ben Brumfield and Brian Todd contributed to this report.

CNN: STORY HIGHLIGHTS

CNN's Brian Todd and Ed Lavandera contributed to this report.

CNN: STORY HIGHLIGHTS

CNN's Brian Todd, Carol Cratty, Mike Mount, Ed Payne, Scott Bronstein, Ted Rowlands, Tom Cohen, Shawn Nottingham, Susan Candiotti, Deborah Feyerick, Phil Gast and Ben Brumfield contributed to this report.

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CNN's Moni Basu, Brian Todd, Ted Rowlands, Carol Cratty, Mike Mount, Ed Payne, Scott Bronstein, Tom Cohen, Shawn Nottingham, Susan Candiotti, Deborah Feyerick, Phil Gast and Ben Brumfield contributed to this report.

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CNN's Brian Todd also contributed to this report.

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CNN's Tom Cohen, Brian Todd, Harmeet Shah Singh, Poppy Harlow, Ed Payne, Ted Rowlands, Marlena Baldacci, Matt Smith, Steve Almasy, Greg Botelho, Phil Gast, Shawn Nottingham, Carol Cratty, Susan Candiotti and Deborah Feyerick contributed to this report.

CNN: STORY HIGHLIGHTS

CNN's Brian Todd contributed to this report.

CNN: Mississippi governor urges caution as river crests

Todd Park is the US Chief Technology Officer, Brian Forde is Advisor to the CTO on Mobile and Data Innovation, and Jo Strang is Chief Safety Officer for the Federal Railroad Administration.

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