CNN is learning the amount of explosive found on Northwest Airlines Flight 253 on Christmas Day was enough to blow a hole into the side of the aircraft and take it down.
That's according to a source with knowledge of the investigation.
Fredricka Whitfield spoke with a passenger who tackled the suspect and helped stop the attack.
Violence in Iran: Tensions are high as pro-democracy demonstrators clash with heavily armed police. We'll have a live report.
The man suspected of attempting to blow up an airliner as it arrived in the U.S. goes before a judge. Civil rights lawyer Avery Friedman joins us in the 8 o'clock hour to talk about who will handle the case and where it will be prosecuted.
A law enforcement official familiar with the investigation of Umar Farouk Abdulmutallab says investigators are looking into any al Qaeda connections and whether he had help and training from Yemen. CNN Terrorism Analyst Peter Bergen joins us again to talk about Al Qaeda in Yemen.
Flooding is a concern now that those winter snow and rain storms that battered much of the nation have moved on. Reynolds Wolf brings us up to date.
And with lines even longer at the airport, Josh Levs has some check-in tips that may shave a bit of time off your wait.
Join TJ Holmes with Brooke Baldwin in for Betty Nguyen on this CNN Sunday morning, beginning 6am ET/ 3am PT.