U.S. cable nets are commemorating the 12th anniversary of the September 11 terror attacks, with H2 airing 9/11: Relics from the Wreckage and Destination America premiering Answering the Call: Ground Zero’s Volunteers.

H2′s 30-minute special 9/11: Relics from the Wreckage highlights five objects being entered into the National September 11 Memorial and Museum, and was spawned as short-form content created by History’s digital programming team. Airing on September 10, the special will see museum president Joe Daniels introduce the museum, currently still under construction, and the artifacts that have been selected to represent 9/11.

History will air an encore of Siskel/Jacobs Productions’ 102 Minutes that Changed America on September 11 at 9 p.m. EST. The documentary fuses together amateur and professional footage, without narration or commentary, to record the events as they unfolded in New York City on September 11.

The sister networks will also air other 9/11 programming, including encores of 9/11 State of Emergency, Grounded on 9/11, The Man who Predicted 9/11, and The Miracle of Stairway B. 

Over on Destination America, the network will debut Answering the Call: Ground Zero’s Volunteers on September 11 at 10 a.m. EST/PST.

Narrated by Kathleen Turner, the special uses reconstructions, footage from Ground Zero, and interviews with the first responders on the scene to tell the story of those who faced danger and fear to answer the call to save others.