Video: Audio of Discovery gunman released: ‘I have a bomb and a gun’
A tense standoff between a hostage-taker and police at the headquarters of the Discovery Channel lasted about four hours Wednesday before Maryland police shot the gunman and rescued the small number of hostages he was holding. NBC's Tom Costello reports. (Nightly News)

Video: Police shoot suspect, hostage standoff ends
Montgomery County, MD, police chief J. Thomas Manger announces they have safely freed three hostages after shooting the suspected gunman, and at some point apparently triggering an explosive device. (Other)

Police Kill Discovery Gunman, 3 Hostages Safe
Police Kill Discovery Gunman, 3 Hostages Safe A man who railed against the Discovery Channel's programming burst into the company's headquarters with at least one explosive device strapped to his body Wednesday and took three people hostage before police shot him to death, officials said. (Sept. 1) From: AssociatedPress Views: 301 17 ratings Time: 02:08 More

Video: Police confirm gunman killed
Montgomery County, MD, police chief J. Thomas Manger announces that the suspected gunman at the Discovery building was killed. (NBC News)

Video: All Discovery employees accounted for
David Leavy, Executive Vice President of Corporate Affairs at Discovery Communications says all Discovery employees are safe and that the company was familiar with the gunman. (NBC News)

Video: Discovery suspect holding hostages
NBC's Pete Williams reports police are not confirming the ID of the Discovery Building incident, but do confirm that the suspect is holding hostages in the building and has a history of grievances against the company. (Other)

Chief: Discovery Gunman Shot Dead; Hostages Safe
Chief: Discovery Gunman Shot Dead; Hostages Safe Police say the gunman who took three people hostage at the Discovery Channel network's programming has died after they shot him. All three hostages escaped safely. (Sept. 1) From: AssociatedPress Views: 328 7 ratings Time: 02:03 More in News & Politics

Video: Suspect may have explosive device
Montgomery County, Maryland police say they can't confirm the ID of the man who entered the Discovery building brandishing a gun, but that he is holding hostages and may have an explosive device. (Other)

Video: 4 officers shot, gunman dead in Detroit
Detroit police officers are recovering after a gunman storms a precinct house. WDIV's Jim Kiertzner reports. (NBC News Channel)

Video: Witnesses describe deadly police shooting
A gunman killed after opening fire on police in a Wal-Mart parking lot in Washington state. KING's Chris Daniels reports. (NBC News Channel)