After terrorist attacks in Paris that left more than 100 dead and closed France's borders, entertainment entities are grappling with how to proceed with plans for programming.

Networks hustled Friday afternoon to adjust schedules and consider preemptions, Variety reports. ABC switched its regularly scheduled 20/20 for a live edition of the show called "Paris Under Attack," as did Nightline, which Juju Chang will anchor. NBC canceled its live taping of the comedy Undateable.

HBO, along with U2 and Live Nation, also decided on Friday to cancel the concert, U2: INNOCENCE + eXPERIENCE Live in Paris, scheduled to air on Saturday. Instead, they "fully resolved to go ahead with this show at an appropriate time," according to the network's statement.

Over 100 killed in coordinated terror attacks in Paris

U2, in Paris at the time of the attacks, added, "We watched in disbelief and shock at the unfolding events in Paris and our hearts go out to all the victims and their families across the city tonight. We are devastated at the loss of life at the Eagles of Death Metal concert and our thoughts and prayers are with the band and their fans. And we hope and pray that all of our fans in Paris are safe".

The Wrap reports that in Paris, former Vice President Al Gore canceled an event he organized, a live benefit for climate change set to broadcast for 24 hours from the Eiffel Tower. Elton John and Bon Jovi were scheduled to perform in the broadcast, which was intended to gain awareness for a Climate Change Summit in Paris scheduled for Nov. 30.

"Out of solidarity with the French people and the City of Paris, we have decided to suspend our broadcast of 24 Hours of Reality and Live Earth," Gore said in a statement. "Our thoughts are with all who have been affected and the entire nation of France. We send our condolences to the families of those who have been killed or injured."